US2707246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination focusing-ion trap structures for cathode-ray tubes
Assignee: General Electric Co
•
Filing: 1952-09-04
•
Granted: 1955-04-26
•
Expires: 1972-09-04
Abstract
No abstract record available.
Inventors
- 👤 Zuerker Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:05
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/84; H01J29/845
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2181850A
Cited
US2211614A
Cited
US2211613A
Cited
US2460609A
Cited
US2515305A
Cited
US2456474A
Cited
US2496127A
Cited
US2522872A
Cited
US2582402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |