US2884236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid contacting apparatus
Assignee: Air Liquide SA
•
Filing: 1955-03-10
•
Granted: 1959-04-28
•
Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Maille Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:35
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/22; B01F23/2312; B01F23/23123; B01F23/231231; B01F23/2311; B01F23/23113
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE29057C
Cited
US2005316A
Cited
US2339561A
Cited
GB669862A
Cited
US2693949A
Cited
FR1065536A
Cited
US2767967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |