US2669357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarification treatment of solids carrying liquid and apparatus therefor
Assignee: Dorr Co
•
Filing: 1952-03-19
•
Granted: 1954-02-16
•
Expires: 1972-03-19
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Kivell
- 👤 Renville S Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:13
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0021; B01D21/02; B01D21/04; B01D21/06; B01D21/08; B01D21/18; B01D21/20; B01D21/24; B01D21/2427; B01D21/2488
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1123011A
Cited
US2268726A
Cited
US2268475A
Cited
US2274361A
Cited
US2353358A
Cited
US2404701A
Cited
US2427886A
Cited
US2506927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |