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Lech S. Zielinski
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Ottawa, CA
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last 30 patents
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Patent Grant
Telephone for a physically handicapped person
Patent number
4,453,043
Issue date
Jun 5, 1984
Northern Telecom Limited
Lech S. Zielinski
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Telephone tactile alert system
Patent number
4,421,953
Issue date
Dec 20, 1983
Northern Telecom Limited
Lech S. Zielinski
H04 - ELECTRIC COMMUNICATION TECHNIQUE