Printing and office machinery – Typewriter or calculator – Calculator
Patent
1989-06-08
1991-11-12
Holtje, Nelson C.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03215296
REFERENCES:
patent: D279688 (1985-07-01), Kitai et al.
patent: D284966 (1986-08-01), Larkins
patent: D301895 (1989-06-01), Hayashi
patent: D304930 (1989-12-01), Hongo et al.
patent: D305535 (1990-01-01), Sakaguchi et al.
patent: D309601 (1990-07-01), Sawada et al.
patent: D309749 (1990-08-01), Ido
patent: 3694674 (1976-06-01), Van der Gaast
patent: 4370727 (1983-01-01), Bellet
patent: 4625099 (1986-11-01), Freedom
Gernstein Terry M.
Holtje Nelson C.
Veynar Caron D.
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