US2809567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating solids from a liquid suspension
Assignee: Bauer Brothers Co
•
Filing: 1953-09-16
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Granted: 1957-10-15
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Expires: 1973-09-16
Abstract
No abstract record available.
Inventors
- 👤 Maurice D Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:33
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/14; B04C5/18; B04C5/15; D; D21; D21D; D21D5/00; D21D5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB171268A
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GB191418791A
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US1539797A
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US2102525A
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US2377524A
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US2645347A
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US2709397A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |