Stuart D. Heffernan

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Fairport, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Control circuit for transfer of auxiliary telephone equipment
- Patent number 4,140,879
- Issue date Feb 20, 1979
- Rochester Telephone Corporation
- Stuart D. Heffernan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone metering interface with reverse signal sensor
- Patent number 4,063,037
- Issue date Dec 13, 1977
- Rochester Telephone Corporation
- Stuart D. Heffernan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE