US2412201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electrolytic devices
Assignee: Individual
•
Filing: 1941-10-01
•
Granted: 1946-12-10
•
Expires: 1961-10-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/048; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-09 | 1950-06-10 | 1950-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-09 | 1954-06-10 | 1954-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-09 | 1958-06-10 | 1958-12-10 | $7700.00 | Window Closed / Lapsed |