Patent US357349A successfully refreshed from Google Patents.
Patent US2802572A successfully refreshed from Google Patents.
US2802572A
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Screen unit for treating solid matter of a suspension
Assignee: Repola Oy
•
Filing: 1952-12-09
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Granted: 1957-08-13
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Expires: 1972-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jalkanen Matti Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:34
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/03; B01D29/036; B01D29/62; B01D29/64; B01D29/6438; B01D29/6446; B01D29/6469; B01D29/6476; B01D29/66; B01D29/68; B01D29/682; B01D29/688; B01D29/76; B01D29/86; B01D33/00; B01D33/15; B01D33/17; B01D33/44; B01D33/46; B01D33/463; B01D33/466; B01D33/48; B01D33/50; B01D33/58; B01D33/68; D; D21; D21D; D21D5/00; D21D5/02; D21D5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1240904A
Cited
US1969176A
Cited
US2220677A
Cited
US2359543A
Cited
US2431478A
Cited
US2534324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |