US PATENT SUBCLASS 292 / 90
.~.~.~ Screw

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

2  DF  BOLTS {15}
80  DF  .~ Spring arm {2}
81  DF  .~.~ Operating means {7}
90.~.~.~ Screw

DEFINITION

Classification: 292/90

(under subclass 81) Devices including screws or screw-threaded elements.