Patent US2552527A successfully refreshed from Google Patents.
US2552527A
Expired / Lapsed
US
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Automatic gain-control system for radar direction indicators
Assignee: Unisys Corp
•
Filing: 1945-03-28
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Granted: 1951-05-15
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Expires: 1965-03-28
Abstract
No abstract record available.
Inventors
- 👤 Walter N Dean
- 👤 James C Rundlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:40
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/34; G01S13/00; G01S13/66
Claims Analysis
Total Claims: 0
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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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |