US1459486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic float valve for the separation of two immiscible liquids
Assignee: Individual
•
Filing: 1922-05-09
•
Granted: 1923-06-19
•
Expires: 1942-05-09
Abstract
No abstract record available.
Inventors
- 👤 Gary M Whitney
- 👤 John F Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7407; Y10T137/8158; Y10T137/8326
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) | 1926-06-18 | 1926-12-18 | 1927-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-06-18 | 1930-12-18 | 1931-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-06-18 | 1934-12-18 | 1935-06-19 | $7700.00 | Window Closed / Lapsed |