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Patent US2570893A successfully refreshed from Google Patents.
US2570893A
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Electronic attenuator for radar
Assignee: Individual
•
Filing: 1947-12-18
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Granted: 1951-10-09
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Expires: 1967-12-18
Abstract
No abstract record available.
Inventors
- 👤 Wilkes Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:29
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2144995A
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US2047929A
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US2085117A
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US2378604A
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US2413171A
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US2412446A
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US2403303A
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US2505534A
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US2433387A
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US2422190A
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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) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |