US1720573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for mixing dry and liquid materials
Assignee: Individual
•
Filing: 1929-03-02
•
Granted: 1929-07-09
•
Expires: 1949-03-02
Abstract
No abstract record available.
Inventors
- 👤 Jr George V Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F35/00; B01F35/71; B01F35/712; B01F35/717; B01F35/7176; B01F35/71805; B01F35/75; B01F35/754; B01F35/7547
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) | 1932-07-08 | 1933-01-07 | 1933-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-07-08 | 1937-01-07 | 1937-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-07-08 | 1941-01-07 | 1941-07-09 | $7700.00 | Window Closed / Lapsed |