US896749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical concentration of liquids.
Assignee: Individual
•
Filing: 1907-06-22
•
Granted: 1908-08-25
•
Expires: 1927-06-22
Abstract
No abstract record available.
Inventors
- 👤 George W Nistle
- 👤 Robert L Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:17
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/463
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) | 1911-08-25 | 1912-02-24 | 1912-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-08-25 | 1916-02-24 | 1916-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-08-25 | 1920-02-24 | 1920-08-25 | $7700.00 | Window Closed / Lapsed |