US PATENT SUBCLASS 200 / 82 R
.~ Piston

Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

81 R  DF  FLUID PRESSURE {8}
82 R.~ Piston {5}
82 B  DF  .~.~> High voltage
82 C  DF  .~.~> Micro-switch
82 D  DF  .~.~> Automobile {1}
82 A  DF  .~.~> Adjustable piston stroke
82 E  DF  .~.~> Magnet

Unofficial Alpha Subclasses: R B C D DA E

DEFINITION

Classification: 200/82

(under subclass 81) Devices in which the fluid acts on a piston which moves in a cylinder.