US2777514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for concentrating liquids
Assignee: Blaw Knox Co
•
Filing: 1949-03-11
•
Granted: 1957-01-15
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Albert W Eckstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:56
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/007; B01D3/06; Y; Y10; Y10S; Y10S159/00; Y10S159/11; Y10S159/32; Y10S159/901
Claims Analysis
Total Claims: 0
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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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |