US PATENT SUBCLASS 248 / 337
.~.~.~.~.~ Friction

Current as of: June, 1999
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248 /   HD   SUPPORTS

317  DF  SUSPENDED SUPPORTS {5}
323  DF  .~ Adjustable {2}
327  DF  .~.~ Vertically {2}
333  DF  .~.~.~ Telescoping tubes {3}
336  DF  .~.~.~.~ Clutch {1}
337.~.~.~.~.~ Friction

DEFINITION

Classification: 248/337

(under subclass 336) Devices in which the clutch is a friction clutch.