US PATENT SUBCLASS 361 / 250
.~.~ With sequential firing by mechanical 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}
250.~.~ With sequential firing by mechanical switching

DEFINITION

Classification: 361/250

With sequential firing by mechanical switching:

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