US PATENT SUBCLASS 292 / 331
.~ Seal-rupturing devices

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

*  DD  SHACKLES {4}
331.~ Seal-rupturing devices

DEFINITION

Classification: 292/331

(under the class definition) Devices comprising shackles for securing closures, with or without housings or casings, and having seals adapted to be ruptured by the operation of the parts.