US3525897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: General Electric Co
•
Filing: 1967-10-11
•
Granted: 1970-08-25
•
Expires: 1987-10-11
Abstract
No abstract record available.
Inventors
- 👤 Ernest T Du Pre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:21
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/36; H01J19/00; H01J19/42; H01J19/46; H01J5/00; H01J5/46; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0006; H01J2893/0007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2749528A
Cited
US2960595A
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US2907911A
Cited
US2882387A
Cited
US2985806A
Cited
US3365606A
Cited
US3270391A
Cited
US3375343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |