US2501181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency cavity resonator apparatus
Assignee: RCA Corp
•
Filing: 1944-08-15
•
Granted: 1950-03-21
•
Expires: 1964-08-15
Abstract
No abstract record available.
Inventors
- 👤 Russell R Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:42
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/78; H01J19/80
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2030178A
Cited
US2241119A
Cited
US2199083A
Cited
US2281717A
Cited
US2353742A
Cited
US2416565A
Cited
US2400753A
Cited
US2404261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |