Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1987-09-14
1988-11-29
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428213, 428214, 428215, 428332, 428336, 428457, 428694, 428702, 428900, G11B 724
Patent
active
047880953
ABSTRACT:
This invention provides a metal oxide magnetic substance represented by the following general formula:
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patent: 3770639 (1973-11-01), Okazaki et al.
patent: 4544602 (1985-10-01), Kobayashi et al.
patent: 4562105 (1985-12-01), Michida et al.
patent: 4670322 (1987-06-01), Nakamura et al.
patent: 4670323 (1987-06-01), Nakamura et al.
Kaneko Yuziro
Machida Hazime
Nakamura Hitoshi
Omi Fumiya
Watada Atsuyuki
Atkinson William M.
Lesmes George F.
Ricoh & Company, Ltd.
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