US3474283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclotron wave upconverter
Assignee: United States Department of the Navy
•
Filing: 1967-03-22
•
Granted: 1969-10-21
•
Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 Henry D Arnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:30
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/49
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3072817A
Cited
US2999959A
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US3054969A
Cited
US3051910A
Cited
US3051911A
Cited
US3122710A
Cited
US3179838A
Cited
US3373309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |