US PATENT SUBCLASS 257 / 683
.~ With means to prevent explosion of package

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

678  DF  HOUSING OR PACKAGE {18}
683.~ With means to prevent explosion of package

DEFINITION

Classification: 257/683

With means to prevent explosion of package:

(under subclass 678) Subject matter including means to prevent explosion of a housing or package.