Patent US2616619A successfully refreshed from Google Patents.
US2616619A
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Method and apparatus for centrifugal elutriation
Assignee: Individual
•
Filing: 1948-08-30
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Granted: 1952-11-04
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Expires: 1968-08-30
Abstract
No abstract record available.
Inventors
- 👤 Norman A Macleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:01
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0442; B04B2005/0471
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US468689A
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US660746A
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US743201A
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US1057870A
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USRE21168E
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US2113160A
Cited
US2361758A
Cited
US2338779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |