Robert R. Hellman

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Bridgeport, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Snap switch having low resistance
- Patent number 5,302,789
- Issue date Apr 12, 1994
- Westport Development & Manufacturing Company, Inc.
- Robert R. Hellman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Radio transmitter with intermixed controls
- Patent number 4,158,812
- Issue date Jun 19, 1979
- Westport International
- Robert R. Hellman
- G05 - CONTROLLING REGULATING
Information Patent Grant
Remote control radio system
- Patent number 4,091,328
- Issue date May 23, 1978
- Westport International, Inc.
- Robert R. Hellman
- G08 - SIGNALLING
Information Patent Grant
Remote control radio system
- Patent number 4,072,898
- Issue date Feb 7, 1978
- Westport International
- Robert R. Hellman
- G08 - SIGNALLING
Information Patent Grant
Dual acting snap switch
- Patent number 4,017,699
- Issue date Apr 12, 1977
- Westport Development & Mfg. Co., Inc.
- Robert R. Hellman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Switch for sensing a selected ratio between two different pressures
- Patent number 4,006,329
- Issue date Feb 1, 1977
- Westport Development & Mfg. Co. Inc.
- Robert R. Hellman
- H01 - BASIC ELECTRIC ELEMENTS