US2704830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning means for dielectric filled cavity resonators
Assignee: RCA Corp
•
Filing: 1950-03-01
•
Granted: 1955-03-22
•
Expires: 1970-03-01
Abstract
No abstract record available.
Inventors
- 👤 Charles A Rosencrans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:57
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23131E
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US2129711A
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US2142138A
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US2304540A
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US2402948A
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US2496772A
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US2532157A
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US2571055A
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US2467325A
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US2625605A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |