US PATENT SUBCLASS 16 / 79
.~ Spring and gear

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

71  DF  CLOSERS {5}
79.~ Spring and gear

DEFINITION

Classification: 16/79

(under subclass 71) Devices including springs, and gears or rack-and-pinion elements for connecting the springs to the doors or closures.