US PATENT SUBCLASS 292 / 350
.~ Screw

Current as of: June, 1999
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292 /   HD   CLOSURE FASTENERS

348  DF  KNOB-ATTACHING DEVICES {6}
350.~ Screw {1}
351  DF  .~.~> Guards

DEFINITION

Classification: 292/350

(under subclass 348) Devices comprising set-screws or screw-catch means.