US2463975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for charging or otherwise treating liquids with gases
Assignee: Individual
•
Filing: 1945-04-11
•
Granted: 1949-03-08
•
Expires: 1965-04-11
Abstract
No abstract record available.
Inventors
- 👤 Ethel H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:59
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/12; B; B01; B01F; B01F25/00; B01F25/70; B01F25/74; B01F25/741; B01F25/7411; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2322; B01F23/233; B01F23/2334; B01F23/23342; B01F23/234; B01F23/2341; B01F23/23412; B01F27/00; B01F27/05; B01F27/11; B01F27/19; B01F27/191; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR744300A
Cited
US1538457A
Cited
US1862069A
Cited
US1768928A
Cited
US2174540A
Cited
US2082759A
Cited
US2189779A
Cited
US2154150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |