William J. Ashworth

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Altamonte Springs, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic audio transducer with hinged armature
- Patent number 5,706,358
- Issue date Jan 6, 1998
- William J. Ashworth
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual voice coil sound reproducing device
- Patent number 5,287,413
- Issue date Feb 15, 1994
- William J. Ashworth
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Combination inertia type audio transducer and loudspeaker
- Patent number 5,058,173
- Issue date Oct 15, 1991
- William J. Ashworth
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for attaching an audio transducer to a string musical instru...
- Patent number 5,031,501
- Issue date Jul 16, 1991
- William J. Ashworth
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Multi-diaphragm artificial reverberation device
- Patent number 4,718,098
- Issue date Jan 5, 1988
- William J. Ashworth
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Electromagnetic speaker with bucking parallel high and low frequenc...
- Patent number 4,151,379
- Issue date Apr 24, 1979
- William J. Ashworth
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ELECTROMAGNETIC AUDIO TRANSDUCER WITH MICRO ADJUSTABLE CORE
- Publication number 20020181730
- Publication date Dec 5, 2002
- William J. Ashworth
- H04 - ELECTRIC COMMUNICATION TECHNIQUE