Patent US2662990A successfully refreshed from Google Patents.
US2662990A
Expired / Lapsed
US
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Resnatron filament basket
Assignee: Collins Radio Co
•
Filing: 1950-09-21
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Granted: 1953-12-15
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Expires: 1970-09-21
Abstract
No abstract record available.
Inventors
- 👤 Walter H Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:07
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15; H01J1/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954203A
Cited
US2269081A
Cited
US2283896A
Cited
US2416298A
Cited
US2516930A
Cited
US2468736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |