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Patent US3404065A successfully refreshed from Google Patents.
US3404065A
Expired / Lapsed
US
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Apparatus for cleaning and fractionating a pulp suspension
Assignee: Metso Fiber Karlstad AB
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Filing: 1967-08-23
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Granted: 1968-10-01
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Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ingemarsson Gosta Ingemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:01
CPC Classifications
B; B07; B07B; B07B7/00; B07B7/08; D; D21; D21D; D21D5/00; D21D5/02; D21D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2450838A
Cited
US3311235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |