Patent US2913615A successfully refreshed from Google Patents.
US2913615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode
Assignee: General Electric Co
•
Filing: 1958-05-14
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Granted: 1959-11-17
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Expires: 1978-05-14
Abstract
No abstract record available.
Inventors
- 👤 Paul B Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1991279A
Cited
US2047390A
Cited
US2171238A
Cited
US2214974A
Cited
US2429118A
Cited
US2549355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |