David S Bernzweig Deceased24 Raleigh Rd, Framingham, MA 01701
David Bernzweig Phones & Addresses
24 Raleigh Rd, Framingham, MA 01701 508-8772337 508-8772327 508-8777369
Northborough, MA
24 Raleigh Rd, Framingham, MA 01701
Work
Position:
Executive, Administrative, and Managerial Occupations
Education
Degree:
High school graduate or higher
Mentions for David S Bernzweig
Publications & IP owners
Us Patents
Metal Detector Audio Amplifier
US Patent:
4594559, Jun 10, 1986
Filed:
Sep 12, 1983
Appl. No.:
6/531295
Inventors:
David S. Bernzweig - Framingham MA
International Classification:
H03F 126
G01V 311
G01V 311
US Classification:
330149
Abstract:
An accessory device for use with a metal detector with means to amplify the low, barely audible audio output of the metal detector so that it can be easily heard with further means to dampen louder audio output signals causing those signals to be softer.
Metal Detector Audio Amplifier
US Patent:
4644290, Feb 17, 1987
Filed:
Feb 14, 1986
Appl. No.:
6/829237
Inventors:
David S. Bernzweig - Framingham MA
International Classification:
H03F 126
G01V 311
G01V 311
US Classification:
330149
Abstract:
An accessory device for use with a metal detector with means to amplify the low, barely audible audio output of the metal detector so that it can be easily heard with further means to dampen louder audio output signals causing those signals to be softer.
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