Conference microphone

Details Conference microphone Conference microphone

1990-10-01

1992-06-30

Rademaker, Charles A.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

Patent

active

D03274799

REFERENCES:
patent: D257346 (1980-10-01), Garrigus et al.
patent: D283891 (1986-05-01), Parshad et al.
patent: 4658425 (1987-04-01), Julstrum
TELECONNECT, "The Shure ST3000 System" by Dorian Benkoil, Jun. 1986, p. AL865.

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