Electronic calculator

Printing and office machinery – Typewriter or calculator – Calculator

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D14100

Patent

active

D03770435

REFERENCES:
patent: D351854 (1994-10-01), Takahata
patent: D353614 (1994-12-01), Ohno et al.
patent: D353827 (1994-12-01), Shigemura et al.
patent: D354073 (1995-01-01), Shigemura
patent: D363505 (1995-10-01), Takahata

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