US Patent Class 79
BUTTON MAKING




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  MISCELLANEOUS
2  DF  SHANK BUTTONS
3  DF  METALLIC
4  DF  .~ Covered
5  DF  .~.~ Cloth
*  DD  PEARL AND COMPOSITION
6  DF  .~ Surfacing and drilling
7  DF  .~ Surfacing
8  DF  .~.~ Tool-sharpening
9  DF  .~.~ Multiple chuck
10  DF  .~.~ Trimming
*  DD  .~ Drilling
*  DD  .~.~ Multiple spindle
11  DF  .~.~.~ Axially opposite
*  DD  .~.~ Single spindle
14  DF  .~.~.~ Single chuck
15  DF  .~ Blank-sawing
16  DF  .~.~ Tubular saw
18  DF  WORK SUPPORTS