Mitel Canada Limited

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Patents Grantslast 30 patents

Information Patent Grant
Tone generator
- Patent number 4,000,379
- Issue date Dec 28, 1976
- Mitel Canada Limited
- Michael C. J. Cowpland
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Alternating current regulator for use with telephone type line
- Patent number 3,989,902
- Issue date Nov 2, 1976
- Mitel Canada Limited
- Michael C. J. Cowpland
- H04 - ELECTRIC COMMUNICATION TECHNIQUE