Combined tape recorder and radio receiver

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

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Details

D14 6, D14 72

Patent

active

D02755670

REFERENCES:
patent: 187221 (1960-02-01), Laub et al.
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patent: D254185 (1980-02-01), Doodson
patent: D271486 (1983-11-01), Doodson
patent: 3643244 (1972-02-01), Levy
patent: 3771164 (1973-11-01), Bolick
W. Bell & Co., 1981 Catalog, p. 276, Items "F" & "J", Bearcats 220 & 160.
American District Telegraph Co., Technical Bulletin "Daytime Annunciator Security System", (May 1980).
Arrowhead Enterprises Inc., Brochure for Series S4400, "2 to 14 Zone Control Instrument", (copyright 1978).
Electrical Consultant, (May/Jun. 1977), p. 6.
Electrical Consultant, (May/Jun. 1978), p. 27.
Electrical Consultant, (Mar./Apr. 1978), p. 40.

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