Patent US2446524A successfully refreshed from Google Patents.
US2446524A
Expired / Lapsed
US
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Electrode and method of making same
Assignee: Individual
•
Filing: 1941-11-14
•
Granted: 1948-08-10
•
Expires: 1961-11-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/048; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T403/00; Y10T403/49; Y10T403/4991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172604A
Cited
US1829015A
Cited
US2128990A
Cited
US2104018A
Cited
US2280789A
Cited
US2375211A
Cited
GB503370A
Cited
US2297607A
Cited
GB521963A
Cited
US2251913A
Cited
GB504452A
Cited
US2218162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |