P

Inventor

LANGSENKAMP AL

US8 patents
⚠️ This page may combine multiple inventors who share the name “LANGSENKAMP AL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SIGMA MICRO CORP

3 patents
US5912947AJun 15, 1999

Public notification system and method

SIGMA MICRO CORP96 citations96
US5559867ASep 24, 1996

Automated calling system with database updating

SIGMA MICRO CORP128 citations96
US6009149ADec 28, 1999

Automated calling system with database updating by callee

SIGMA MICRO CORP66 citations94

SIGMA COMMUNICATIONS INC

3 patents
US6567504B1May 20, 2003

Automated calling system with database updating

SIGMA COMMUNICATIONS INC66 citations91
US6556664B1Apr 29, 2003

Public notification system and method

SIGMA COMMUNICATIONS INC39 citations90
US6678358B2Jan 13, 2004

Automated nodal calling system

SIGMA COMMUNICATIONS INC26 citations88

PLANT EQUIP INC DBA PLANTCML

1 patent
US7558558B2Jul 7, 2009

Automated mobile notification system

PLANT EQUIP INC DBA PLANTCML39 citations89

LANGSENKAMP AL

1 patent
US8073422B2Dec 6, 2011

Satellite radio warning system and method

LANGSENKAMP AL18 citations78