Telephone instrument set

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

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D14151

Patent

active

D03207978

REFERENCES:
patent: D290700 (1987-07-01), Lindahl
patent: D294023 (1988-02-01), Sekiguchi et al.
patent: D294497 (1988-03-01), Oshima et al.
patent: D295514 (1988-03-01), Inaka
patent: D300925 (1989-05-01), Nogas
patent: D301031 (1989-05-01), Sasaki et al.
patent: D301524 (1990-09-01), Utsuki et al.
patent: D302815 (1989-08-01), Goatman
patent: D304727 (1989-11-01), Barker et al.
patent: D306587 (1990-03-01), Ando
patent: D313235 (1990-12-01), Kido et al.
Siemens Topset 204, Executive Phone: publication in Siemens Private Communication Systems; at p. 220, Report 9, No. 4, Jul./Aug. 1986.

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