Housing for telephone switchboard

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment

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D14240, D13184

Patent

active

D03488870

REFERENCES:
patent: D279562 (1985-07-01), Wood
patent: D293317 (1987-12-01), Umezu et al.
patent: D295512 (1988-05-01), Becraft et al.
patent: D297837 (1988-09-01), Shibuya
patent: D310665 (1990-09-01), Fortune et al.
patent: D311389 (1990-10-01), Festa et al.
patent: D312074 (1990-11-01), Koepke et al.
patent: D315554 (1991-03-01), Hill
patent: D330888 (1992-11-01), Worley
"MX-6250", Toshiba magazine The Dempa Shimbun dated Feb. 16, 1988.
"APEX2400", NEC magazine NEC Technical News.
"MX-6250", Toshiba catalog, Feb. 1988.
"IBM5970-KO1", IBM catalog.
Oki catalog, "10X5310".
"PX-3600", Toshiba magazine The Dempa Shimbun dated Apr. 17, 1990.
"PX-3600", Toshiba catalog, Apr. 1990.

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