US PATENT SUBCLASS 16 / 56
.~.~ Multiple piston

Current as of: June, 1999
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16 /   HD   MISCELLANEOUS HARDWARE

49  DF  CHECKS AND CLOSERS {6}
51  DF  .~ Liquid {8}
56.~.~ Multiple piston

DEFINITION

Classification: 16/56

(under subclass 51) Devices including a plurality of cylinders and pistons.