US1808956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of combining liquids and gases
Assignee: Schutte and Koerting Co
•
Filing: 1930-06-17
•
Granted: 1931-06-09
•
Expires: 1950-06-17
Abstract
No abstract record available.
Inventors
- 👤 Sigmund G Ketterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:26
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/50; B01F25/53; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F25/20; B01F25/21; B01F25/30; B01F25/31; B01F25/312; Y; Y10; Y10S; Y10S261/00; Y10S261/75
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-06-08 | 1934-12-08 | 1935-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-08 | 1938-12-08 | 1939-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-08 | 1942-12-08 | 1943-06-09 | $7700.00 | Window Closed / Lapsed |