Portable data entry terminal

Details Portable data entry terminal Portable data entry terminal

1979-03-19

1981-04-21

Zarfas, Louis S.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D18 7, D1402

Patent

active

D02589567

REFERENCES:
patent: D227770 (1973-07-01), Yamamoto
patent: D240634 (1976-07-01), Hazama
patent: D251272 (1979-03-01), Hazama et al.
patent: D253533 (1979-11-01), Sims et al.
patent: 4090247 (1978-05-01), Martin
Datamation, 11/1975, p. 158-Terminal at bottom left.

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