US3054926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: Individual
•
Filing: 1960-01-25
•
Granted: 1962-09-18
•
Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Martin H Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:37
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/58; H01J31/60; G; G11; G11C; G11C11/00; G11C11/21; G11C11/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2844722A
Cited
US2875373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |