US2496378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavity resonator device for ultra-short waves
Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-04-24
•
Granted: 1950-02-07
•
Expires: 1966-04-24
Abstract
No abstract record available.
Inventors
- 👤 Coeterier Frederik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:44
CPC Classifications
H; H01; H01J; H01J25/00; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2242275A
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US2280824A
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US2263648A
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US2323729A
Cited
US2403795A
Cited
US2391016A
Cited
US2409179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |