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US2433774A
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Centrifugal separator
Assignee: Western Precipitation Corp
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Filing: 1944-05-18
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Granted: 1947-12-30
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Expires: 1964-05-18
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Madely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:44
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/24; B04C5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1742564A
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US1694784A
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US1906432A
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US1931194A
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US1931193A
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US2201301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |