Patent US3013267A successfully refreshed from Google Patents.
US3013267A
Expired / Lapsed
US
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Trough waveguide slow wave antennas and transmission lines
Assignee: Individual
•
Filing: 1957-03-20
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Granted: 1961-12-12
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 Rotman Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735958A
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US2602893A
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US2659817A
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US2623121A
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US2849711A
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US2806210A
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US2799831A
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US2903656A
Cited
US2829343A
Cited
US2943325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |