Printing and office machinery – Typewriter or calculator – Calculator
Patent
1988-06-07
1991-04-16
Holtje, Nelson C.
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03162672
REFERENCES:
patent: D298546 (1988-11-01), Yoshioka et al.
patent: D304175 (1989-10-01), Sakaguchi et al.
Miller Frederick A.
Valiga Richard A.
Holtje Nelson C.
Spraying Systems Co.
Veynar Caron D.
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