Patent US2567092A successfully refreshed from Google Patents.
US2567092A
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Magnetic recorder-reproducer device of the disk type
Assignee: Brush Development Co
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Filing: 1947-06-07
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Granted: 1951-09-04
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Expires: 1967-06-07
Abstract
No abstract record available.
Inventors
- 👤 Alfred L W Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/012; G11B17/00; G11B17/02; G11B17/022; G11B17/025; G11B17/0255; G11B17/32; G11B21/00; G11B21/16; G11B21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR721844A
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US1889380A
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US2078113A
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US2229293A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |