Lev Spevak

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Highland Park, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Midrange ultrasonic transducer
- Patent number 5,452,267
- Issue date Sep 19, 1995
- Magnetrol International, Inc.
- Lev Spevak
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Leak locating microphone, method and system for locating fluid leak...
- Patent number 5,349,568
- Issue date Sep 20, 1994
- The University of Chicago
- David S. Kupperman
- G01 - MEASURING TESTING