Sound multiplier

Details Sound multiplier Sound multiplier

1973-11-27

1976-02-17

Tomsky, Stephen J.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

G10K 1110

Patent

active

039386163

ABSTRACT:
An acoustic amplifier securable detachably to the ears and supported by a head piece to amplify sound without the use of electricity.

REFERENCES:
patent: 698713 (1902-04-01), Klaws
patent: 1761666 (1930-06-01), Hinternesch
patent: 2498239 (1950-02-01), Berkeley
patent: 2537201 (1951-01-01), Amfitheatrof
patent: 3128352 (1964-04-01), Cagen
patent: 3637040 (1972-01-01), Gorman

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