Steven M. Hamer

Follow

Person

Willernie, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Vehicle tracking system incorporating traffic signal preemption
- Patent number 5,602,739
- Issue date Feb 11, 1997
- Minnesota Mining and Manufacturing Company
- Jeffrey D. Haagenstad
- G08 - SIGNALLING
Information Patent Grant
GPS-based traffic control preemption system
- Patent number 5,539,398
- Issue date Jul 23, 1996
- Minnesota Mining and Manufacturing Company
- Timothy J. Hall
- G08 - SIGNALLING
Information Patent Grant
Vehicle detector with power main noise compensation
- Patent number 5,361,064
- Issue date Nov 1, 1994
- Minnesota Mining and Manufacturing Company
- Steven M. Hamer
- G08 - SIGNALLING
Information Patent Grant
Optical traffic preemption detector
- Patent number 5,202,683
- Issue date Apr 13, 1993
- Minnesota Mining and Manufacturing Company
- Steven M. Hamer
- G08 - SIGNALLING
Information Patent Grant
System and method for transmitting data in an optical traffic preem...
- Patent number 5,172,113
- Issue date Dec 15, 1992
- Minnesota Mining and Manufacturing Company
- Steven M. Hamer
- G08 - SIGNALLING
Information Patent Grant
Vehicle detector with series resonant oscillator drive
- Patent number 5,153,525
- Issue date Oct 6, 1992
- Minnesota Mining and Manufacturing Company
- Earl B. Hoekman
- G08 - SIGNALLING