US2780783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna feed modulation unit for ridged waveguide
Assignee: Individual
•
Filing: 1953-11-20
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Granted: 1957-02-05
•
Expires: 1973-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Clyde E Vogeley
- 👤 Richard H Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:14
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/17; H03; H03C; H03C7/00; H03C7/02; H03C7/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |