Patent US1744302A successfully refreshed from Google Patents.
US1744302A
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US
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Electrolytic condenser
Assignee: FANSTEEL PROD CO Inc
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Filing: 1927-03-14
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Granted: 1930-01-21
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Expires: 1947-03-14
Abstract
No abstract record available.
Inventors
- 👤 Edgar W Engle
- 👤 Harold L Olesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G9/00; Y; Y10; Y10T; Y10T29/00; Y10T29/43
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) | 1933-01-20 | 1933-07-22 | 1934-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-01-20 | 1937-07-22 | 1938-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-01-20 | 1941-07-22 | 1942-01-21 | $7700.00 | Window Closed / Lapsed |