US PATENT SUBCLASS 109 / 27
.~.~ Pressure relief mechanism

Current as of: June, 1999
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109 /   HD   SAFES, BANK PROTECTION, OR A RELATED DEVICE

23  DF  COMBINED {8}
26  DF  .~ With means to prevent successful use of explosives {2}
27.~.~ Pressure relief mechanism

DEFINITION

Classification: 109/27

(under subclass 26) Devices wherein means is provided for venting the excessive pressure resulting from an explosive attack.

SEE OR SEARCH CLASS

137, Fluid Handling,

455, particularly subclasses 467, 469, 506 to 510 and 511 for excess pressure relief valves of general application.