US PATENT SUBCLASS 418 / 258
.~.~ Spring


Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

253  DF  INTERCONNECTED VANES {3}
257  DF  .~ Interposed movable member interconnects plural vanes {1}
258.~.~ Spring


DEFINITION

Classification: 418/258

(under subclass 257) Apparatus wherein the interposed member is a resilient mechanical device.