Printing and office machinery – Typewriter or calculator – Calculator
Patent
1988-08-31
1991-08-27
Word, A. Hugo
Printing and office machinery
Typewriter or calculator
Calculator
Patent
active
D03194590
REFERENCES:
patent: D221386 (1971-08-01), Babbs
patent: D282375 (1986-01-01), Dolson
patent: 3333766 (1967-08-01), Crossland et al.
patent: 3620587 (1971-11-01), Ahmann
patent: 4445731 (1984-05-01), Ahmann
patent: 4510378 (1985-04-01), Dolson
Bleck James H.
Wagner Stephen A.
Wakefield Scott H.
Allen Paula
Sequoia Pacific Systems Corporation
Word A. Hugo
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