US2498082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun structure for cathode-ray tubes
Assignee: RCA Corp
•
Filing: 1947-12-19
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Granted: 1950-02-21
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Expires: 1967-12-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:10
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/023; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/36; H01J43/00; H01J43/04; H01J43/06; H01J43/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |