Joseph A. Sawyer

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Camden, ME, US

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Patents Grantslast 30 patents

Information Patent Grant
Armature assembly for balanced moving armature magnetic transducer...
- Patent number 6,763,571
- Issue date Jul 20, 2004
- Tibbetts Industries, Inc.
- George C. Tibbetts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Magnetic transducers of improved resistance to arbitrary mechanical...
- Patent number 6,727,789
- Issue date Apr 27, 2004
- Tibbetts Industries, Inc.
- George C. Tibbetts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Armature assembly for balanced moving armature magnetic transducer...
- Patent number 6,526,153
- Issue date Feb 25, 2003
- Tibbetts Industries, Inc.
- George C. Tibbetts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Encapsulated backplate for electret transducers
- Patent number 4,442,324
- Issue date Apr 10, 1984
- Tibbetts Industries, Inc.
- Senior N. Blanchard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transducer shielding enclosure
- Patent number 4,430,520
- Issue date Feb 7, 1984
- Tibbetts Industries, Inc.
- George C. Tibbetts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cell assembly for electret transducer
- Patent number 4,418,246
- Issue date Nov 29, 1983
- Tibbetts Industries, Inc.
- Joseph A. Sawyer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Armature assembly for balanced moving armature magnetic transducer...
- Publication number 20030138114
- Publication date Jul 24, 2003
- Tibbetts Industries, Inc.
- George C. Tibbetts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Magnetic transducers of improved resistance to arbitrary mechanical...
- Publication number 20020186110
- Publication date Dec 12, 2002
- Tibbetts Industries, Inc.
- George C. Tibbetts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Armature assembly for balanced moving armature magnetic transducer...
- Publication number 20020125972
- Publication date Sep 12, 2002
- George C. Tibbetts
- H01 - BASIC ELECTRIC ELEMENTS