Printing and office machinery – Typewriter or calculator
Patent
1980-12-23
1982-11-02
Zarfas, Louis S.
Printing and office machinery
Typewriter or calculator
D1801
Patent
active
D02667681
REFERENCES:
patent: D231635 (1974-05-01), Penney
patent: D253774 (1979-12-01), Beinkowski
The Washington Post, Thurs., 3/25/76, p. D17-Sears "Communicator 1" Typewriter.
Bevilacqua Ernest M.
Danielson David C.
Griffith Robert E.
Hawthorne Allen D.
McCroskery Allan L.
International Business Machines - Corporation
Letson Laurence R.
Zarfas Louis S,.
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