Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1978-03-23
1980-03-25
Lucas, Susan J.
Printing and office machinery
Typewriter or calculator
Element or attachment
D14 40, D14 53, D1801, D1402, D1403
Patent
active
D02545543
REFERENCES:
patent: 3940758 (1976-02-01), Margolin
patent: 4120039 (1978-10-01), Fischer
Genaro Donald M.
Stokes Rembert R.
Sylvester Gordon E.
Bell Telephone Laboratories Incorporated
Lucas Susan J.
Pfeifle Erwin W.
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