John H. Garthwaite

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Coupeville, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Modular higher density communications coupling system
- Patent number 5,290,175
- Issue date Mar 1, 1994
- Leviton Manufacturing Co., Inc.
- Scott T. Robinson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Portable telecommunications test instrument with line condition mon...
- Patent number 5,157,708
- Issue date Oct 20, 1992
- Leviton Manufacturing Co., Inc.
- John H. Garthwaite
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modular higher density communications coupling system
- Patent number 5,106,325
- Issue date Apr 21, 1992
- Leviton Manufacturing Co. Inc.
- Scott T. Robinson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Modular higher density communications coupling system
- Patent number 5,007,860
- Issue date Apr 16, 1991
- Leviton Manufacturing Co., Inc.
- Scott T. Robinson
- H01 - BASIC ELECTRIC ELEMENTS