Combined desk top electronic calculator and clock

Details Combined desk top electronic calculator and clock Combined desk top electronic calculator and clock

1979-06-28

1981-05-26

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Combined

D10 2, D18 7, D1801

Patent

active

D02593483

REFERENCES:
patent: D233346 (1974-10-01), Bellini
patent: D236132 (1975-07-01), Bellini
patent: 3361243 (1968-01-01), Kaiser
patent: 3524970 (1970-08-01), Wang

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