Inventor

PFEFFER THOMAS W

US3 patents

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

GEN MOTORS CORP

1 patent

US7222006B2May 22, 2007

Method for determination of pre-authorization engine operation time for a vehicle theft deterrent system

GEN MOTORS CORP50 citations91

SIEMENS VDO AUTOMOTIVE CORP

1 patent

US6653747B1Nov 25, 2003

Electronic key system including ignition and transmission control

SIEMENS VDO AUTOMOTIVE CORP30 citations88

SIEMENS AUTOMOTIVE CORP LP

1 patent

US6386447B1May 14, 2002

Smart card with card in vehicle warning

SIEMENS AUTOMOTIVE CORP LP24 citations88