Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1987-04-10
1990-02-06
Largen, James R.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03059073
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patent: D286057 (1986-10-01), Tamada et al.
patent: D289529 (1987-04-01), Cappotto et al.
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patent: 4175719 (1979-11-01), Speckman
patent: 4511271 (1985-04-01), Oberto
Ing. C. Olivetti & C. S.p.A.
Largen James R.
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