P

Inventor

EGGERS FREDERICK W

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

C & K SYSTEMS INC

3 patents
US5578988ANov 26, 1996

Intrusion detection system having self-adjusting threshold

C & K SYSTEMS INC78 citations91
US5491467AFeb 13, 1996

Location independent intrusion detection system

C & K SYSTEMS INC38 citations85
USD354925SJan 31, 1995

Infra-red intruder detector

C & K SYSTEMS INC18 citations79

FEDERAL SIGNAL CORP

2 patents
US4613797ASep 23, 1986

Flash strobe power supply

FEDERAL SIGNAL CORP45 citations88
US4530037AJul 16, 1985

Flash tube with moving reflectors

FEDERAL SIGNAL CORP1 citations42

GE SECURITY INC

1 patent
US7564365B2Jul 21, 2009

Smoke detector and method of detecting smoke

GE SECURITY INC22 citations92

GEN ELECTRIC

1 patent
US7019683B2Mar 28, 2006

Shipping container security system

GEN ELECTRIC43 citations90

COOPER IND INC

1 patent
US5032969AJul 16, 1991

Turbine engine igniter exciter circuit

COOPER IND INC32 citations90