US2431135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating cathodes
Assignee: Westinghouse Electric Corp
•
Filing: 1944-03-29
•
Granted: 1947-11-18
•
Expires: 1964-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rupert O Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US781025A
Cited
US1329467A
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US1519085A
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US2251046A
Cited
US1953799A
Cited
US2329024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |