Patent US1665845A successfully refreshed from Google Patents.
US1665845A
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US
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Antisludging means for oil
Assignee: General Electric Co
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Filing: 1926-09-28
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Granted: 1928-04-10
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Expires: 1946-09-28
Abstract
No abstract record available.
Inventors
- 👤 David C Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:37
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/10; H01F27/12; H01F27/14; C; C10; C10M; C10M175/00; C10M175/0008; C10M2201/00; C10M2201/10; C10M2201/102; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17
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) | 1931-04-10 | 1931-10-10 | 1932-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-04-10 | 1935-10-10 | 1936-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-04-10 | 1939-10-10 | 1940-04-10 | $7700.00 | Window Closed / Lapsed |