|  Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999 |  and Services | 
| DF | CLASS NOTES | |
| 1 | DF | AUTOMATIC SUBSTITUTION OF DISCHARGE DEVICE, ELECTRODE OR LAMP | 
| 2 | DF | .~ With current-shifting switch | 
| 3 | DF | .~ Differential separation type | 
| 4 | DF | .~ Common electrode-operating type | 
| 5 | DF | .~.~ Electrode magazine type | 
| 6 | DF | .~.~ Current- and/or potential-actuated release | 
| 7 | DF | PLURAL DEVICES | 
| 8 | DF | .~ Series-connected | 
| 9 | DF | WITH SIGNAL, INDICATOR AND/OR ALARM | 
| 10 | DF | WTH AUTOMATIC SHUNT AND/OR CUTOUT | 
| 11 | DF | .~ Shunt circuit closing | 
| 12 | DF | .~.~ Regulating magnet placed in the shunt | 
| 13 | DF | .~.~ With compensating impedance | 
| 14 | DF | .~.~.~ Feed-regulating mechanism, actuated switch | 
| 15 | DF | .~.~ Current- and/or potential-actuated switch | 
| 16 | DF | .~.~.~ Feed-regulating mechanism, actuated switch | 
| 17 | DF | .~ Switch-operated type | 
| 18 | DF | .~.~ Current- and/or potential-actuated switch | 
| 19 | DF | .~.~.~ Feed-regulating mechanism, switch-actuated type | 
| 20 | DF | WTH DISCHARGE-DEFLECTING MEANS | 
| 21 | DF | WITH AUXILIARY MATERIAL SUPPLY TO THE DISCHARGE | 
| 22 | DF | .~ Fluent material feed | 
| 23 | DF | WITH ELECTRODE TIP CLEANER OR FILM-PUNCTURING MEANS | 
| 24 | DF | .~ Repeated contact type | 
| 25 | DF | WITH ECONOMIZER | 
| 26 | DF | WITH VENTILATOR, FUME FLOW SHIELD, FUME CONDENSER AND/OR TEMPERATURE MODIFYING MEANS | 
| 27 | DF | .~ Movable type, connected to the electrode or electrode-moving mechanism | 
| 28 | DF | .~ Ventilator, fume director and/or condenser | 
| 29 | DF | .~ Liquid-circulating type | 
| 30 | DF | .~ Radiating transmitter type | 
| 31 | DF | POLYPHASE A.C. SUPPLY | 
| 32 | DF | WITH TRANSFORMER IN SUPPLY LINE | 
| 33 | DF | THREE OR MORE SERIES-CONNECTED ELECTRODES | 
| 34 | DF | WITH AUXILIARY-STARTING ELECTRODE | 
| 35 | DF | WITH AUXILIARY-CONTROL ELECTRODE FOR THE ELECTRODE-MOVING MECHANISM | 
| 36 | DF | PLURAL CATHODE AND/OR ANODE TYPE | 
| 37 | DF | .~ Consumption feed type | 
| 38 | DF | .~ Interconnectd feed operator | 
| 39 | DF | OSCILLATORY AND/OR ROTARY ELECTRODE MOTION TYPE | 
| 40 | DF | .~ Interconnected feeding and oscillating and/or rotating mechanism | 
| 41 | DF | .~.~ Rotary motion-type power supply | 
| 42 | DF | .~ Rotary electrode | 
| 43 | DF | .~.~ Plural rotary electrode | 
| 44 | DF | DISK OR PLATE ELECTRODE TYPE | 
| 45 | DF | INCLINED OR PARALLEL ELECTRODES | 
| 46 | DF | .~ Pivoted electrode | 
| 47 | DF | .~.~ Plural pivoted electrodes | 
| 48 | DF | .~.~.~ Linear feed | 
| 49 | DF | .~.~ Linear feed | 
| 50 | DF | .~ Interconnected feed operator | 
| 51 | DF | PLURAL MOVABLE ELECTRODES | 
| 52 | DF | .~ Plural electrode feeding | 
| 53 | DF | .~.~ Interconnected operator | 
| 54 | DF | .~.~.~ With separate movement of one electrode | 
| 55 | DF | .~.~.~ With diverse rates of feed | 
| 56 | DF | .~.~.~ Gear-, belt-, or chain-connected | 
| 57 | DF | MANUAL FEED | 
| 58 | DF | .~ With power drive | 
| 59 | DF | CONSUMPTION FEED TYPE | 
| 60 | DF | .~ Electrodes | 
| 61 | DF | FLUID TRANSMISSION | 
| 62 | DF | MOTOR SPEED-CONTROLLED | 
| 63 | DF | RADIANT ENERGY RESPONSIVE CONTROL TYPE | 
| 64 | DF | ELECTRIC DISCHARGE CONTROL CIRCUIT | 
| 65 | DF | WITH ELECTRODE SEPARATING MECHANISM AND FEEDING MECHANISM | 
| 66 | DF | .~ Electromagnetic separating | 
| 67 | DF | .~.~ Electromagnetic feed | 
| 68 | DF | POSITIVE FEED | 
| 69 | DF | .~ Rotary electric motor | 
| 70 | DF | .~.~ With motor-braking | 
| 71 | DF | .~.~ With motor circuit impedance regulator | 
| 72 | DF | .~.~.~ Switch-controlled motor circuit | 
| 73 | DF | .~.~ Switch-controlled motor circuit | 
| 74 | DF | .~.~.~ With regulation of switch operator | 
| 75 | DF | .~.~ Auxiliary motor circuit current supply | 
| 76 | DF | .~.~ Differential wound armature and/or field | 
| 77 | DF | .~ Pawl and ratchet | 
| 78 | DF | .~ Electromagnetic operator | 
| 79 | DF | .~ Power-transmission control | 
| 80 | DF | .~.~ Gear train | 
| 81 | DF | .~.~.~ Reversible | 
| 82 | DF | ESCAPEMENT FEED CONTROL | 
| 83 | DF | DETENT OR BRAKE-CONTROLLED ROTARY FEED MEMBER OR GEAR | 
| 84 | DF | .~ Movable feed frame type | 
| 85 | DF | .~.~ Pivoted frame | 
| 86 | DF | .~.~.~ Multiple magnet-operated | 
| 87 | DF | .~ Locked during separating stroke | 
| 88 | DF | .~.~ Positive-acting brake or detent | 
| 89 | DF | THERMOSTATIC OPERATOR OR CONTROLLER | 
| 90 | DF | .~ With mechanical energy-storing device | 
| 91 | DF | WITH RESILIENT OR LOST MOTION CONNECTION | 
| 92 | DF | WITH MECHANICAL ENERGY-STORING DEVICE | 
| 93 | DF | .~ Rod gripper biasing type | 
| 94 | DF | .~ With electric motive power | 
| 95 | DF | .~.~ Biased lever | 
| 96 | DF | .~.~.~ Spring-biased | 
| 97 | DF | .~.~ Spring-biased | 
| 98 | DF | WITH ELECTRODE COUNTERBALANCE | 
| 99 | DF | WITH RETARDER | 
| 100 | DF | .~ Retarded feeding type | 
| 101 | DF | RELEASABLE ELECTRODE OR RODGRIPPER TYPE | 
| 102 | DF | .~ Plural clutches | 
| 103 | DF | .~ With separation limit stop | 
| 104 | DF | .~ Magnetic clutch | 
| 105 | DF | .~ Electromagnetically operated | 
| 106 | DF | .~.~ Plural electromagnet coils | 
| 107 | DF | .~.~.~ Three or more | 
| 108 | DF | .~.~.~ Interconnected lever systems | 
| 109 | DF | .~.~.~.~ Common oscillating lever or armature | 
| 110 | DF | .~.~.~ Coaxial coils | 
| 111 | DF | .~.~ Concentric magnet and electrode | 
| 112 | DF | SLIDING ELECTRODE TYPE | 
| 113 | DF | ELECTROMAGNETIC OPERATOR AND/OR FEED-CONTROLLING | 
| 114 | DF | .~ With control of the electromagnet circuit | 
| 115 | DF | .~.~ With current or voltage regulator | 
| 116 | DF | .~.~.~ Current- or potential-responsive | 
| 117 | DF | .~.~ Shunt magnet control | 
| 118 | DF | .~.~.~ With control of series magnet | 
| 119 | DF | .~ With electromagnetically operated separating | 
| 120 | DF | .~.~ Movable coil | 
| 121 | DF | .~.~ Plural coils | 
| 122 | DF | .~.~.~ Three or more | 
| 123 | DF | .~.~.~ Interconnected lever system | 
| 124 | DF | .~.~.~.~ Common oscillating lever or armature | 
| 125 | DF | .~.~.~ Coaxial coils | 
| 126 | DF | .~.~.~ Opposed magnetic flux type | 
| 127 | DF | .~.~ Concentric magnet and electrode | 
| 128 | DF | .~ Vibration-damped electromagnet | 
| 129 | DF | WITH CURRENT-TRANSFER DEVICE | 
| 130 | DF | FRAMES AND ELECTRODE SUPPORTS | 
| 131 | DF | .~ With electric switch | 
| 132 | DF | .~ With electric impedance | 
| 133 | DF | .~ With electrode guides | 
| 134 | DF | .~ Adjustable electrode supports | 
| 135 | DF | WITH CURRENT OR VOLTAGE REGULATOR | 
| 136 | DF | MISCELLANEOUS |