US2653259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device anode
Assignee: Individual
•
Filing: 1946-03-29
•
Granted: 1953-09-22
•
Expires: 1966-03-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:45
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/36; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628999A
Cited
GB509102A
Cited
US2394396A
Cited
US2406276A
Cited
US2412772A
Cited
US2380502A
Cited
US2492996A
Cited
US2462510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |