Patent US2422555A successfully refreshed from Google Patents.
US2422555A
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US
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Drum-shaped oil separator divided by partitions into inlet, intermediate, and outletsections
Assignee: GEHLE
•
Filing: 1945-04-20
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Granted: 1947-06-17
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Expires: 1965-04-20
Abstract
No abstract record available.
Inventors
- 👤 Charles B Karlson
- 👤 Spence G Benham
- 👤 William A Gehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:15
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1116903A
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US1396889A
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GB138655A
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US1708021A
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US1513882A
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US1494670A
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US1946415A
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US1958010A
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US1889601A
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US2076380A
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US2236332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |