Patent US2377524A successfully refreshed from Google Patents.
US2377524A
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US
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Method of and means for separating solid particles in pulp suspensions and the like
Assignee: Hammermill Paper Co
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Filing: 1939-11-21
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Granted: 1945-06-05
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Expires: 1959-11-21
Abstract
No abstract record available.
Inventors
- 👤 Edward W Samson
- 👤 Alfred H Croup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:01
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B04C5/24; B04C5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-06-04 | 1948-12-04 | 1949-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-04 | 1952-12-04 | 1953-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-04 | 1956-12-04 | 1957-06-05 | $7700.00 | Window Closed / Lapsed |