Jacek J. Wojcik

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Nepean, CA

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Patents Grantslast 30 patents

Information Patent Grant
Telephone headset hearing aid
- Patent number D289289
- Issue date Apr 14, 1987
- Northern Telecom Limited
- Jacek J. Wojcik
- D14 - Recording, communication, or information retrieval equipment
Information Patent Grant
Telephone hearing aid
- Patent number 4,596,899
- Issue date Jun 24, 1986
- Northern Telecom Limited
- Jacek J. Wojcik
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information 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