Coin operated box telephone unit

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

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D02891590

REFERENCES:
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Telephony, 9/11/81, at p. 99: Marlee Electronics Corp.: Model 5ED.
(British) Post Office Electrical Engineers' Journal: vol. 74, Oct. 1981, at p. 240, FIG. 5(a) Prepayment Payphone.
Grand Commn. Booklet "Telephone Headquarters of America".
Northern Supply Catalog-p. C373, Pay Stations.

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