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US2561365A
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US
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Magnetic recording head, including a device for adjusting the gap width
Assignee: MAGNETIC EQUIPMENT Inc
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Filing: 1948-05-06
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Granted: 1951-07-24
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Expires: 1968-05-06
Abstract
No abstract record available.
Inventors
- 👤 Donald G C Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044033A
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US2058399A
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US2351003A
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US2360625A
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US2351007A
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US2483123A
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US2446624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |