Telephone set

Recording – communication – or information retrieval equipment – Computer – data processor equipment

Patent

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Details

D14 62, D14 59

Patent

active

D02906066

REFERENCES:
patent: D173037 (1954-09-01), Neustadter
patent: D229837 (1974-01-01), Genaro et al.
patent: D237091 (1975-10-01), Blumenan
patent: D237505 (1975-11-01), Thies
patent: D243961 (1977-04-01), Buchin et al.
patent: D254067 (1980-01-01), Janda
patent: D258288 (1981-02-01), Aekawa et al.
patent: D262879 (1982-02-01), Marshall
patent: D283319 (1986-04-01), Marshall
patent: D284570 (1986-07-01), Hentschel
patent: 4220828 (1980-09-01), Ruzic
Ericksson Review; vol. 57, No. 2, 1980: Model D1AVOX100 at FIG. 1 and at p. 46.
Siemens Teamset 151, Key System, Article Aug. 1978.

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