Laurence J. Retallack

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Low profile circuit board mounted telephone jack
- Patent number 4,731,833
- Issue date Mar 15, 1988
- Northern Telecom Limited
- Beverley W. Gumb
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Programming switch assembly for communication terminals
- Patent number 4,647,728
- Issue date Mar 3, 1987
- Northern Telecom Limited
- Laurence J. Retallack
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Parallel operation of telephone equipment on a digital loop
- Patent number 4,493,949
- Issue date Jan 15, 1985
- Northern Telecom Limited
- Laurence J. Retallack
- H04 - ELECTRIC COMMUNICATION TECHNIQUE