United States Patent 3321041
US Patent References:
/0350393.html
- - 0350393
/1203329.html
- - 1203329
/2169806.html
- - 2169806
Pickup for detecting and translating vibrations
- - 2311416
Continuously rotating selectively operable apparatus for producing vibrato and tremolo
- - 3192322
/0350393.html
- - 0350393
/1203329.html
- - 1203329
/2169806.html
- - 2169806
Pickup for detecting and translating vibrations
- - 2311416
Continuously rotating selectively operable apparatus for producing vibrato and tremolo
- - 3192322
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International Classes:
A61B7/02; A61B7/00