Patent US2736868A successfully refreshed from Google Patents.
US2736868A
Expired / Lapsed
US
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Cavity tuner
Assignee: Individual
•
Filing: 1946-01-11
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Granted: 1956-02-28
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Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Persa R Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:07
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2226479A
Cited
US2262020A
Cited
US2280824A
Cited
US2401489A
Cited
US2417542A
Cited
US2513205A
Cited
US2442671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |