Wall-mounted, telephone system unit

Recording – communication – or information retrieval equipment – Computer – data processor equipment

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Details

D14 53, D14 61

Patent

active

D02922827

REFERENCES:
patent: D107538 (1937-12-01), McConn
patent: D197279 (1964-01-01), Bartley et al.
patent: D209208 (1967-11-01), Gilbert
patent: D225113 (1972-11-01), Genaro et al.
patent: D247174 (1978-02-01), Janda
patent: D248102 (1978-06-01), Blake
patent: D269780 (1983-07-01), Doodson
patent: D278054 (1985-03-01), Vajdaffy
patent: D278055 (1985-03-01), Vajdaffy
patent: 2433295 (1947-12-01), Riebe
patent: 2948377 (1960-08-01), Kennedy
patent: 3144513 (1964-08-01), Sherron
patent: 3247332 (1966-04-01), McHugh
patent: 3800089 (1974-03-01), Reddick
patent: 3932709 (1976-01-01), Hoff
patent: 4182938 (1980-01-01), Neumeier
All About Telephones; 2nd edition by Von Waterford; .COPYRGT.1983 by Tab Books Inc.
Amer. Institute of Graphic Standards, 7th ed. by R. T. Packard; at p. 700, Master Station Intercom: center of top Systems.

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