US2685235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of screening fibrous suspensions
Assignee: Svenska Cellulosa AB
•
Filing: 1948-10-15
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Granted: 1954-08-03
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Expires: 1968-10-15
Abstract
No abstract record available.
Inventors
- 👤 Lindblad Karl Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:06
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/48; B03B5/56; D; D21; D21D; D21D5/00; D21D5/02; D21D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1620865A
Cited
US1627655A
Cited
US2271263A
Cited
US2406618A
Cited
US2416499A
Cited
US2532415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |