Conference telephone

Details Conference telephone Conference telephone

1997-01-02

1999-03-16

Asch, Jeffrey

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D14243, 1403

Patent

active

D04068416

REFERENCES:
patent: D292283 (1987-10-01), Matsuda et al.
patent: D307274 (1990-04-01), Sasaki et al.
patent: D342732 (1993-12-01), Hinman
patent: D382266 (1997-08-01), Wakefield
Hello Direct, Spring 1997, p. 44, ConferenceLink.

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