US2436375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarifier for lubricating coolants by means of frothe flotation
Assignee: Wyeth Holdings LLC
•
Filing: 1943-04-19
•
Granted: 1948-02-24
•
Expires: 1963-04-19
Abstract
No abstract record available.
Inventors
- 👤 Robert B Booth
- 👤 Morash Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:08
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B03; B03D; B03D1/00; B03D1/02; B03D1/028; B03D1/14; B03D1/1412; B03D1/1443; B03D1/1456; B03D1/1462; B03D1/1493; B03D1/16; B03D1/20; B03D1/24; B03D1/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |