US1765433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling density or viscosity of liquids
Assignee: Individual
•
Filing: 1928-01-07
•
Granted: 1930-06-24
•
Expires: 1948-01-07
Abstract
No abstract record available.
Inventors
- 👤 Charles O Lavett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:29
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/06; B01D1/12; B01D1/0082; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2501; Y10T137/6416; Y10T137/6579; Y10T137/8593; Y10T137/85954
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) | 1933-06-23 | 1933-12-23 | 1934-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-23 | 1937-12-23 | 1938-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-23 | 1941-12-23 | 1942-06-24 | $7700.00 | Window Closed / Lapsed |