Assignee
ENG SYST
8 granted patents·149 citations·filing 1976–1980
Top patents by PatentIndex Score
8 records- 0188US4022038AMagnetically operated locking device and keyENG SYST·Filed 1976·Granted May 10, 1977·46 cites·1 claims
- 0282US4023157ATheft alarm for portable articlesENG SYST·Filed 1976·Granted May 10, 1977·30 cites·15 claims
- 0371US4117462AUltrasonic transmitter for burglar alarm systemENG SYST·Filed 1976·Granted Sep 26, 1978·21 cites·23 claims
- 0462US4365750AAdjustable sprinkler systemENG SYST·Filed 1980·Granted Dec 28, 1982·19 cites·1 claims
- 0555US4097809ALocal event broadcast systemENG SYST·Filed 1976·Granted Jun 27, 1978·12 cites·10 claims
- 0649US4280025ALockable cover assembly for push-button key padENG SYST·Filed 1980·Granted Jul 21, 1981·8 cites·7 claims
- 0744US4164911AApparatus for re-inking printing ribbonsENG SYST·Filed 1977·Granted Aug 21, 1979·6 cites·3 claims
- 0842US4106442ADevice for increasing fuel economy of an internal combustion engineENG SYST·Filed 1976·Granted Aug 15, 1978·7 cites·13 claims
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