Patent US2952395A successfully refreshed from Google Patents.
US2555110A
Expired / Lapsed
US
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Magnetic head assembly
Assignee: Int Electronics Co
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Filing: 1947-10-03
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Granted: 1951-05-29
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Expires: 1967-10-03
Abstract
No abstract record available.
Inventors
- 👤 Lloyd J Bobb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:36
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB403671A
Cited
US2144844A
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US2229326A
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US2202139A
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US2233621A
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US2263485A
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US2351003A
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US2413108A
Cited
US2488717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |