Printer port extender

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment

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D13147

Patent

active

D03285952

REFERENCES:
patent: D268262 (1983-03-01), Frantz
patent: D275850 (1984-10-01), Wilson
Intelli-Cable connector on p. 86 of Inmac Catalog Jan. 1988.
Inmac RS-232 interface on p. 38 of Inmac Catalog 1-88.
Line driver on p. 120 of Misco Catalog Winter '1988.
RS-232 interface on p. 45 of Patton Electronics Co. Catalog #9, Mar. 1990.

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