Patent US2507979A successfully refreshed from Google Patents.
US2507979A
Expired / Lapsed
US
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Anchoring cathode
Assignee: RCA Corp
•
Filing: 1948-03-13
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Granted: 1950-05-16
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Expires: 1968-03-13
Abstract
No abstract record available.
Inventors
- 👤 Kelar Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:34
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/04; F; F16; F16B; F16B17/00; F16B17/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2067967A
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US2306018A
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US2244358A
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US2460580A
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US2417202A
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US2405399A
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US2393057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |