Headset telephone

Details Headset telephone Headset telephone

1985-07-19

1987-10-20

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 59

Patent

active

D02924005

REFERENCES:
patent: D207094 (1967-03-01), Rakocy
patent: D221826 (1971-09-01), Cook
patent: D229499 (1973-12-01), Krumin et al.
patent: D231474 (1974-04-01), Helgesson
patent: D282289 (1986-01-01), Verdier
patent: 1483315 (1924-02-01), Saal
patent: 3218607 (1965-11-01), Brock et al.
patent: 3272926 (1966-09-01), Falkenberg
patent: 3977900 (1976-07-01), Foley
patent: 4138598 (1979-02-01), Cech
patent: 4175217 (1979-11-01), Williams

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