Metal detector audio amplifier
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 10, 1986
Grant Date -
N/A
app pub date -
Sep 12, 1983
filing date -
Sep 12, 1983
priority date (Note) -
Expired
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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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