Printing and office machinery – Typewriter or calculator – Element or attachment
Patent
1987-10-15
1989-09-12
Largen, James R.
Printing and office machinery
Typewriter or calculator
Element or attachment
Patent
active
D03033961
REFERENCES:
patent: D266256 (1982-09-01), Grey
patent: D274178 (1984-06-01), Schiffmacher
patent: D275499 (1984-09-01), Akazawa
patent: D280210 (1985-08-01), Ledoux
patent: D284389 (1986-06-01), Sheriek
patent: 4293234 (1981-10-01), Yonkers et al.
patent: 4388066 (1983-06-01), Waibel
patent: 4415285 (1983-11-01), Bury
patent: 4485825 (1984-11-01), Wilczewski et al.
patent: 4630948 (1986-12-01), Karus
Dataproducts Corporation
Largen James R.
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