Function extended unit for a telephone

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

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D03881024

REFERENCES:
patent: D271394 (1983-11-01), Brown et al.
patent: D271763 (1983-12-01), Brown et al.
patent: D306027 (1990-02-01), Gagnon
patent: D312461 (1990-11-01), Ando
patent: D315564 (1991-03-01), Kido et al.
patent: D317920 (1991-07-01), Fuqua
patent: D321873 (1991-11-01), Ando
patent: D328300 (1992-07-01), Hattori et al.
patent: D340057 (1993-10-01), Wetzel et al.
patent: D374674 (1996-10-01), Elkins et al.
patent: D375100 (1996-10-01), Toh
patent: 3928732 (1975-12-01), Simon et al.
patent: 4394545 (1983-07-01), Doyle et al.
B. A. Pargh 1992 Spring/Summer Catalog, Extension Console at top left of the right side of the page, p. 331.
VA-82430; DSS/BLF Console. Nov. 9, 1988.

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