Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1994-08-16
1996-06-18
Douglas, Alan P.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03709345
REFERENCES:
patent: 4272202 (1981-06-01), Schroeder et al.
patent: 4299504 (1981-11-01), Benz et al.
patent: 4523868 (1985-06-01), Shadwick
patent: 4820067 (1989-04-01), Surti
Douglas Alan P.
Seiko Epson Corporation
Snapp S.
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