US PATENT SUBCLASS 16 / 57
.~.~ Oscillating cylinder

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

49  DF  CHECKS AND CLOSERS {6}
51  DF  .~ Liquid {8}
57.~.~ Oscillating cylinder

DEFINITION

Classification: 16/57

(under subclass 51) Devices including oscillating cylinders.