US2456649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode
Assignee: Individual
•
Filing: 1943-06-12
•
Granted: 1948-12-21
•
Expires: 1963-06-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn F Rouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:09
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1667977A
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US1797990A
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US1730837A
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US1813320A
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US1941661A
Cited
US2052103A
Cited
US2103033A
Cited
US2069867A
Cited
GB453863A
Cited
US2246176A
Cited
US2406277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |