US PATENT SUBCLASS 292 / 301
.~ Screw catch

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

300  DF  RIGID ENGAGING MEANS {4}
301.~ Screw catch

DEFINITION

Classification: 292/301

(under subclass 300) Devices having screw-threaded catch devices for preventing disengagement of the closures.