US3004259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically variable waveguide slot with longitudinal polarization
Assignee: Raytheon Co
•
Filing: 1958-07-21
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Granted: 1961-10-10
•
Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Howard E Shanks
- 👤 Bernard J Maxum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:05
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44; H01Q3/443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2574433A
Cited
US2597144A
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US2704327A
Cited
US2773256A
Cited
US2808584A
Cited
US2903656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |