US3417279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar slow-wave circuit
Assignee: United States Department of the Air Force
•
Filing: 1964-09-04
•
Granted: 1968-12-17
•
Expires: 1984-09-04
Abstract
No abstract record available.
Inventors
- 👤 Chodorow Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:02
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J25/00; H01J25/34; H01J25/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2712614A
Cited
US3024384A
Cited
US3192430A
Cited
US3231780A
Cited
US3264514A
Cited
US3142777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |