Electronic calculator with printer

Details Electronic calculator with printer Electronic calculator with printer

1987-06-17

1990-04-17

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D03072894

REFERENCES:
patent: D229065 (1973-11-01), Maeda et al.
patent: D243249 (1977-02-01), Hazama et al.
patent: D279109 (1985-06-01), Yubisui et al.
patent: D283711 (1986-05-01), Deura et al.
patent: D289045 (1987-03-01), Brown
patent: D291582 (1987-08-01), Kreisner
patent: D294369 (1988-02-01), Yubisui et al.

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