Patent US2973145A successfully refreshed from Google Patents.
US2973145A
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Assignee: Unisys Corp
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Filing: 1956-01-31
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Granted: 1961-02-28
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Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 Howard L Daniels
- 👤 Valerius E Herzfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:43
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/27; G06M1/276; G06M1/08; G06M1/10; G06M1/102; G06M1/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307369A
Cited
US945236A
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US2295968A
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US2433389A
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US2465198A
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US2625822A
Cited
US2700076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |