Inside unit for intercom

Details Inside unit for intercom Inside unit for intercom

1988-01-27

1991-01-08

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Intercom

D14144

Patent

active

D03135950

REFERENCES:
patent: D303665 (1989-09-01), Ohta et al.
Roberta Fortunes Almanac, p. 14, Combined Phone/Clock/Radio.

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