US1117831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of removing oxygen from water.
Assignee: Individual
•
Filing: 1913-09-15
•
Granted: 1914-11-17
•
Expires: 1933-09-15
Abstract
No abstract record available.
Inventors
- 👤 Robert Gans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:23
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08
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) | 1917-11-16 | 1918-05-18 | 1918-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-11-16 | 1922-05-18 | 1922-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-11-16 | 1926-05-18 | 1926-11-17 | $7700.00 | Window Closed / Lapsed |