Loud speaker

Details Loud speaker Loud speaker

1980-05-12

1982-05-11

Corrigan, Jane E.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 30, D1401

Patent

active

D02643367

REFERENCES:
patent: D230865 (1974-03-01), Petroff
patent: D248471 (1978-07-01), Asai
patent: D253108 (1979-10-01), Schroeder
RFL Industries, Inc., Boonton, N. J., "Hardware Coupler with Acoustical Adapter" leaflet.
Radio Shack Sale Cat. #303, 9-27-78, p. 10, Item "C".

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