R. Keith Harman

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Tempe, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Coupled transmission line sensor cable and method
- Patent number 5,448,222
- Issue date Sep 5, 1995
- Southwest Microwave, Inc.
- R. Keith Harman
- G08 - SIGNALLING
Information Patent Grant
Differential, multiple cell reflex cable intrusion detection system...
- Patent number 5,446,446
- Issue date Aug 29, 1995
- Southwest Microwave, Inc.
- R. Keith Harman
- G08 - SIGNALLING