US1583591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating liquids with gases
Assignee: Individual
•
Filing: 1922-06-29
•
Granted: 1926-05-04
•
Expires: 1942-06-29
Abstract
No abstract record available.
Inventors
- 👤 William E Greenawalt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:24
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/23314; B03D1/1493; B01F23/23311; B01F27/00; B01F27/05; B01F27/11; B01F27/113; B01F27/1131; B01F27/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-05-03 | 1929-11-02 | 1930-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-03 | 1933-11-02 | 1934-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-03 | 1937-11-02 | 1938-05-04 | $7700.00 | Window Closed / Lapsed |