US2664560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Unisys Corp
•
Filing: 1949-12-01
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Granted: 1953-12-29
•
Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Lvman Joseph
- 👤 George B Litchford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12; H01Q3/14; G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/44; G01S1/46; G01S1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |