US2959707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow wave propagating structure
Assignee: TDK Micronas GmbH
•
Filing: 1958-03-03
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Granted: 1960-11-08
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Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Robert W Wilmarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:41
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367295A
Cited
US2573012A
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US2653270A
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US2591350A
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US2654004A
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US2590511A
Cited
US2758612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |