Electronic calculator with printer

Details Electronic calculator with printer Electronic calculator with printer

1987-04-30

1990-07-10

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D03091520

REFERENCES:
patent: D229065 (1973-11-01), Maeda et al.
patent: D269354 (1983-06-01), Ishida
patent: D278156 (1985-03-01), Sawada et al.

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