Assignee
SIGMA MICRO CORP
US·3 granted patents·290 citations·filing 1994–1998
Technology mixH04M3
Top patents by PatentIndex Score
3 records- 0186US5559867AAutomated calling system with database updatingSIGMA MICRO CORP·Filed 1994·Granted Sep 24, 1996·128 cites·16 claims
- 0282US5912947APublic notification system and methodSIGMA MICRO CORP·Filed 1996·Granted Jun 15, 1999·96 cites·15 claims
- 0375US6009149AAutomated calling system with database updating by calleeSIGMA MICRO CORP·Filed 1998·Granted Dec 28, 1999·66 cites·14 claims
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