Patent US2786546A successfully refreshed from Google Patents.
US2786546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for liquid-vapor separation
Assignee: California Research LLC
•
Filing: 1954-06-07
•
Granted: 1957-03-26
•
Expires: 1974-06-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Mcmillin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:24
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B01D19/0057
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US516371A
Cited
US738745A
Cited
US756537A
Cited
US1737680A
Cited
US1823301A
Cited
US2057257A
Cited
US2082863A
Cited
US2191190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |