US2875367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode structures
Assignee: General Electric Co
•
Filing: 1954-10-22
•
Granted: 1959-02-24
•
Expires: 1974-10-22
Abstract
No abstract record available.
Inventors
- 👤 James E Beggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:42
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15; H01J1/16; H01J1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1881644A
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US1859522A
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US1974448A
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US1929931A
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US2144519A
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US2367332A
Cited
US2488716A
Cited
US2527984A
Cited
US2509702A
Cited
US2516704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |