US2758240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron-discharge devices
Assignee: Rauland Borg Corp
•
Filing: 1953-12-30
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Granted: 1956-08-07
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Constantin S Szegho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:50
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/94; H01J31/00; H01J31/08; H01J31/10; H01J31/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739043A
Cited
US1787300A
Cited
US2392969A
Cited
US2575835A
Cited
US2668253A
Cited
US2638559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |