Ralph J. Koerner

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Pomona, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Identification system for monitoring the presence / absence of memb...
- Patent number 7,292,628
- Issue date Nov 6, 2007
- Ralph J Koerner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Identification system for monitoring the presence/absence of member...
- Patent number 6,611,556
- Issue date Aug 26, 2003
- Steve J. Koerner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Variometer system for soaring flight
- Patent number 5,175,540
- Issue date Dec 29, 1992
- Ralph J. Koerner
- G01 - MEASURING TESTING
Information Patent Grant
Strip material for and a surface mounted inductive loop
- Patent number 4,945,356
- Issue date Jul 31, 1990
- Minnesota Mining and Manufacturing Company
- Martin C. Henderson
- G08 - SIGNALLING
Information Patent Grant
Apparatus for detecting ferromagnetic material
- Patent number 4,449,115
- Issue date May 15, 1984
- Minnesota Mining and Manufacturing Company
- Ralph J. Koerner
- G08 - SIGNALLING
Information Patent Grant
Inductive loop vehicle detector
- Patent number 3,989,932
- Issue date Nov 2, 1976
- Canoga Controls Corporation
- Ralph J. Koerner
- G08 - SIGNALLING
Information Patent Grant
Inductive loop detector system
- Patent number 3,943,339
- Issue date Mar 9, 1976
- Canoga Controls Corporation
- Ralph J. Koerner
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
Identification system for monitoring the presence / absence of memb...
- Publication number 20040004999
- Publication date Jan 8, 2004
- Ralph J. Koerner
- G06 - COMPUTING CALCULATING COUNTING