US2479192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode
Assignee: General Electric Co
•
Filing: 1946-06-28
•
Granted: 1949-08-16
•
Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 William P Zabel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:04
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB187261A
Cited
US2020001A
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US2106689A
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US2145911A
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US2141933A
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US2214974A
Cited
US2227602A
Cited
US2247869A
Cited
US2329118A
Cited
US2373427A
Cited
US2371205A
Cited
US2424518A
Cited
US2422272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |