Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1987-04-28
1990-04-24
Largen, James R.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03074374
REFERENCES:
patent: D231800 (1974-06-01), Hess
patent: D237010 (1975-09-01), Gnutzman et al.
patent: D245116 (1977-07-01), Trezise
patent: 3857565 (1977-12-01), Kupferschmidt et al.
patent: 3935939 (1976-02-01), Schmidt et al.
patent: 4147439 (1979-04-01), Colecchi
patent: 4301957 (1981-11-01), Shorp
patent: 4406553 (1983-09-01), Nally et al.
patent: 4594011 (1986-06-01), Hayashi
Hermes Precisa International SA
Largen James R.
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