US2510171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament mount for high-power tubes
Assignee: Collins Radio Co
•
Filing: 1948-05-25
•
Granted: 1950-06-06
•
Expires: 1968-05-25
Abstract
No abstract record available.
Inventors
- 👤 John W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:53
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15; H01J1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2164477A
Cited
US2405762A
Cited
US2451987A
Cited
US2385435A
Cited
US2441349A
Cited
US2452786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |