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US2698901A
Expired / Lapsed
US
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Back-radiation reflector for microwave antenna systems
Assignee: Individual
•
Filing: 1948-03-17
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Granted: 1955-01-04
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Expires: 1968-03-17
Abstract
No abstract record available.
Inventors
- 👤 Wilkes Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:30
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/02; H01Q19/021; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/134
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2129712A
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US2220861A
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US2531454A
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US2438343A
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US2429640A
Cited
US2422184A
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US2415352A
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US2433924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |