US PATENT SUBCLASS 361 / 249
.~.~ With sequential firing by electronic switching

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

247  DF  IGNITING SYSTEMS {3}
248  DF  .~ For explosive devices {4}
249.~.~ With sequential firing by electronic switching

DEFINITION

Classification: 361/249

With sequential firing by electronic switching:

(under subclass 248) Subject matter wherein plural explosive devices are ignited in a particular sequence by electronic switch means.

(1) Note. The electronic switch means includes nonmechanical devices such as vacuum tubes, transistors, SCR's, etc.