Telecommunication voice/data switch

Details Telecommunication voice/data switch Telecommunication voice/data switch

1992-03-06

1994-06-21

Douglas, Alan P.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

D14107, D14242, D14256, D21 13

Patent

active

D03480704

REFERENCES:
patent: D285558 (1986-09-01), Isaacs
patent: D295178 (1988-04-01), Pedinielli
patent: D311910 (1990-11-01), Pedinielli et al.
patent: D312627 (1990-12-01), Gutzmer
patent: D326448 (1992-05-01), Fukuda
patent: D334218 (1993-03-01), Lee
patent: D339307 (1993-09-01), Tahari et al.
patent: D341363 (1993-11-01), Chambers
patent: 5184830 (1993-02-01), Okada et al.

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