US1789320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for mixing materials
Assignee: Flintkote Co
•
Filing: 1925-12-07
•
Granted: 1931-01-20
•
Expires: 1945-12-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Overbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/85; B01F27/851; B01F35/00; B01F35/30; B01F35/32; B01F35/323; B01F35/3231; Y; Y10; Y10S; Y10S366/00; Y10S366/605
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) | 1934-01-19 | 1934-07-21 | 1935-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-19 | 1938-07-21 | 1939-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-19 | 1942-07-21 | 1943-01-20 | $7700.00 | Window Closed / Lapsed |