Handset telephone unit

Details Handset telephone unit Handset telephone unit

1983-09-23

1986-08-19

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 64, 179175, 179103

Patent

active

D02852004

REFERENCES:
patent: D85008 (1931-09-01), Speck
patent: D85679 (1931-12-01), Weeber et al.
patent: D258061 (1981-01-01), Foreman et al.
patent: D258656 (1981-03-01), Vaughan et al.
patent: 2039625 (1936-05-01), Blount
patent: 2245835 (1941-06-01), Stehlik
patent: 2410434 (1946-11-01), Edwards et al.
patent: 2686835 (1954-08-01), Gottlieb
patent: 3632878 (1972-01-01), Stratman
patent: 3792205 (1974-02-01), O'Dea
patent: 4214132 (1980-07-01), Kelso

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