US2562653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil and water separator
Assignee: Individual
•
Filing: 1947-12-17
•
Granted: 1951-07-31
•
Expires: 1967-12-17
Abstract
No abstract record available.
Inventors
- 👤 Elmer R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:11
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/04; B01D17/042; B01D17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559439A
Cited
US1252017A
Cited
US1396889A
Cited
US1943367A
Cited
US1921689A
Cited
US1947709A
Cited
US2195408A
Cited
US2342950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |