Christopher Elmer

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Guelph, CA

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Patents Grantslast 30 patents

Information Patent Grant
Line circuit for telecommunications exchange using TDM
- Patent number 3,997,738
- Issue date Dec 14, 1976
- International Telephone & Telegraph Corporation
- Viacheslav Korsky
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telecommunication system using TDM switching
- Patent number 3,941,936
- Issue date Mar 2, 1976
- International Standard Electric Corporation
- Keith Graham
- H04 - ELECTRIC COMMUNICATION TECHNIQUE