US2831579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing oil from oil and water mixtures
Assignee: GALE SEPARATOR CO Inc
•
Filing: 1954-11-03
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Granted: 1958-04-22
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Expires: 1974-11-03
Abstract
No abstract record available.
Inventors
- 👤 William A Gehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:28
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D21/00; B01D21/0024; B01D21/003; B01D21/0039; B01D21/0042; B01D21/009; B01D21/10; B01D21/24; B01D21/2444; B01D21/30; B01D21/302; B01D21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1080113A
Cited
US1907001A
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US2047989A
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US2216977A
Cited
US2380436A
Cited
US2502142A
Cited
US2670848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |