Patent US2767965A successfully refreshed from Google Patents.
US2767965A
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US
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Dual pumping agitation
Assignee: Mining Process and Patent Co
•
Filing: 1950-11-03
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Granted: 1956-10-23
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:14
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B03D1/02; B03D1/028; B03D1/1406; B03D1/1412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE566830C
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US637014A
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US629479A
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US961802A
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US1985153A
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DE703771C
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US2238139A
Cited
US2393976A
Cited
GB594496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |