Patent JPS4991404A successfully refreshed from Google Patents.
JPS4991404A
Expired / Lapsed
JP
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JPS4991404A - - Google Patents
Assignee: —
•
Filing: 1973-12-19
•
Granted: —
•
Expires: 1993-12-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-23 14:41
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/002; G11B7/0025; G11B7/003; G11B7/004; G11B7/005; G11B7/007; G11B7/08; G11B7/09; G11B7/0945; G11B7/12; G11B7/2403; G11B7/24035; G11B7/24038; G11C; G11C13/00; G11C13/04; G11C13/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3673412A
Cited
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