Speaker diaphragm

Details Speaker diaphragm Speaker diaphragm

1983-06-02

1986-10-28

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 37

Patent

active

D02863995

REFERENCES:
patent: D76266 (1928-09-01), Stevens
patent: D100216 (1936-06-01), Little
patent: 1315411 (1919-09-01), Ray
patent: 1454913 (1923-05-01), Tigerstedt
patent: 1465019 (1923-08-01), Mattausch
patent: 3033945 (1962-05-01), Villchur
patent: 3328537 (1967-06-01), Hecht
patent: 3935400 (1976-01-01), Koga

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