US PATENT SUBCLASS 236 / 28
.~.~ Stroke retarding

Current as of: June, 1999
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236 /   HD   AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION

20 R  DF  CLOSED FLUID HEATERS {8}
26 R  DF  .~ Pressure-operated {11}
28.~.~ Stroke retarding

DEFINITION

Classification: 236/28

(under subclass 26) Devices with means for increasing the resistance to movement of a control element as movement from normal increases.