Patent US1516132A successfully refreshed from Google Patents.
US1516132A
Expired / Lapsed
US
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Oil and water stratifying device
Assignee: Individual
•
Filing: 1923-02-26
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Granted: 1924-11-18
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Expires: 1943-02-26
Abstract
No abstract record available.
Inventors
- 👤 William R Allen
- 👤 William M Marker
- 👤 Richmond Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; C; C10; C10G; C10G33/00; C10G33/06
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) | 1927-11-18 | 1928-05-19 | 1928-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-11-18 | 1932-05-19 | 1932-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-11-18 | 1936-05-19 | 1936-11-18 | $7700.00 | Window Closed / Lapsed |