Electronic exchange

Details Electronic exchange Electronic exchange

1998-12-09

2000-04-18

Nunn, Freda

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D13162, 1402

Patent

active

D04229770

REFERENCES:
patent: D283817 (1986-05-01), Sakamoto
patent: D310661 (1990-09-01), Esslinger
patent: D310999 (1990-10-01), Nuttall et al.

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