US2737342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary magnetic data storage system
Assignee: Teleregister Corp
•
Filing: 1948-08-04
•
Granted: 1956-03-06
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Expires: 1968-08-04
Abstract
No abstract record available.
Inventors
- 👤 Dale H Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:49
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004; G06; G06Q; G06Q10/00; G06Q10/08; G06Q10/087; G06Q10/0877; G06Q10/08772
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2420590A
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US2439446A
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US2446037A
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US2587532A
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US2611813A
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US2609143A
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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) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |