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US3372087A
Expired / Lapsed
US
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Self-cleaning sieve device in containers for cellulosic pulp
Assignee: Metso Fiber Karlstad AB
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Filing: 1964-04-20
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Granted: 1968-03-05
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Johan C F C Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:06
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/02; B; B01; B01D; B01D25/00; B01D25/32; B01D25/38; B01D35/00; B01D35/22; D21D; D21D5/00; D21D5/02; D21D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061767A
Cited
US1607013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |