Patent US2610646A successfully refreshed from Google Patents.
US2610646A
Expired / Lapsed
US
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Proportioning distributor for mineral pulp or the like
Assignee: United States Steel Corp
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Filing: 1950-06-29
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Granted: 1952-09-16
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Expires: 1970-06-29
Abstract
No abstract record available.
Inventors
- 👤 Stanley D Michaelson
- 👤 William S Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:47
CPC Classifications
B; B03; B03B; B03B11/00; B03D; B03D1/00; B03D1/14; B03D1/1412; B03D1/1443; B03D1/1456; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/479
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US756327A
Cited
US739925A
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US791425A
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US1100649A
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US1348885A
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US1447321A
Cited
US2332118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |