Memory card for electronic calculator

Details Memory card for electronic calculator Memory card for electronic calculator

1989-11-15

1991-09-24

Holtje, Nelson C.

Printing and office machinery

Typewriter or calculator

Element or attachment

D14114

Patent

active

D03202259

REFERENCES:
patent: D287253 (1986-12-01), Satake
patent: D291698 (1987-09-01), Hirooka et al.
patent: D298326 (1988-11-01), Kimura
patent: D298327 (1988-11-01), Kimura
patent: D304448 (1989-11-01), De La Cruz et al.
patent: D311391 (1990-10-01), Ueshin et al.
patent: 4455642 (1984-06-01), Inaba

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