US PATENT SUBCLASS 16 / 66
.~ Pneumatic

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

49  DF  CHECKS AND CLOSERS {6}
66.~ Pneumatic {4}
67  DF  .~.~> Flexible link
68  DF  .~.~> Hinge
69  DF  .~.~> Spring and gear
70  DF  .~.~> Spring and lever

DEFINITION

Classification: 16/66

(under subclass 49) Devices the checking devices including pneumatic checking means.