Patent US2916726A successfully refreshed from Google Patents.
US2916726A
Expired / Lapsed
US
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Data storage apparatus
Assignee: Unisys Corp
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Filing: 1955-03-04
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Granted: 1959-12-08
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Expires: 1975-03-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Mansky
- 👤 Jr Isaac M Sheaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:25
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004; G11B5/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1362910A
Cited
US1517060A
Cited
US1770113A
Cited
US2617705A
Cited
US2694192A
Cited
US2708693A
Cited
US2810622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |