US PATENT SUBCLASS 16 / 199
.~.~ Friction roller

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

193  DF  SASH BALANCES {4}
197  DF  .~ Spring {4}
199.~.~ Friction roller

DEFINITION

Classification: 16/199

(under subclass 197) Devices combined with friction-rollers or the like for holding the sashes in balanced or adjusted position.