US2694795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavity resonator
Assignee: Individual
•
Filing: 1951-07-31
•
Granted: 1954-11-16
•
Expires: 1971-07-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas T Pureka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:45
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/22; H01J25/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2030724A
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US2450026A
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US2410109A
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US2487619A
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US2442671A
Cited
US2431103A
Cited
US2562323A
Cited
US2589248A
Cited
US2500637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |