Patent US2585005A successfully refreshed from Google Patents.
US2926844A
Expired / Lapsed
US
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Sensing device for magnetic record
Assignee: Individual
•
Filing: 1952-03-14
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Granted: 1960-03-01
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Expires: 1972-03-14
Abstract
No abstract record available.
Inventors
- 👤 George C Devol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008; G11B5/00804; G11B5/00808; G11B5/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2254931A
Cited
US2294681A
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US2424295A
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US2423339A
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US2547838A
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US2496579A
Cited
US2608621A
Cited
US2581209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |