Patent US2574494A successfully refreshed from Google Patents.
US2574494A
Expired / Lapsed
US
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Timing apparatus
Assignee: Unisys Corp
•
Filing: 1946-07-16
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Granted: 1951-11-13
•
Expires: 1966-07-16
Abstract
No abstract record available.
Inventors
- 👤 Palmer Winslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
G; G04; G04F; G04F10/00; G04F10/06; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S13/00; G01S13/66; G01S13/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2029069A
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US2211942A
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US2406316A
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US2427029A
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US2426216A
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US2426910A
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US2418364A
Cited
US2476409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |