US2569654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube
Assignee: Individual
•
Filing: 1948-11-19
•
Granted: 1951-10-02
•
Expires: 1968-11-19
Abstract
No abstract record available.
Inventors
- 👤 John M Cage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:27
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/894; H01J29/02; H01J29/10; H01J29/18; H01J29/24; H01J29/861; H01J31/00; H01J31/08; H01J31/10; H01J31/12
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |