Patent US2775760A successfully refreshed from Google Patents.
US2775760A
Expired / Lapsed
US
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Micro wave antenna feed
Assignee: Davis Tool and Engineering Co Inc
•
Filing: 1952-07-28
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Granted: 1956-12-25
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Expires: 1972-07-28
Abstract
No abstract record available.
Inventors
- 👤 Lowell R Brown
- 👤 Winton J Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:06
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/134
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2509196A
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US2429640A
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US2400099A
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US2496643A
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US2449570A
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US2702858A
Cited
GB623756A
Cited
US2698901A
Cited
US2577158A
Cited
US2617151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |