US2787447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mixer
Assignee: AMF Inc
•
Filing: 1953-08-24
•
Granted: 1957-04-02
•
Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Duffer B Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1076666A
Cited
US1406791A
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US1765386A
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US1768957A
Cited
US1908002A
Cited
US2074673A
Cited
US2254127A
Cited
US2377937A
Cited
US2541221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |