Code entry terminal for security access system

Details Code entry terminal for security access system Code entry terminal for security access system

1978-06-08

1980-07-15

Lucas, Susan J.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D1402

Patent

active

D02558998

REFERENCES:
patent: 3493922 (1970-02-01), Laas
Electrical Consultant, 1-2-1977, p. 57, Security Access Unit.
Electronics, 12-11-1975, p. 122, Microprocessing Timer/Counter Sliding Keyboard.

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