Patent US2532415A successfully refreshed from Google Patents.
US2532415A
Expired / Lapsed
US
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Rotary screening drum
Assignee: Svenska Cellulosa AB
•
Filing: 1946-04-19
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Granted: 1950-12-05
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Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 Lindblad Karl Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:51
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US612424A
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US810813A
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US1166882A
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US1237280A
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US1620865A
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US2271263A
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US2406618A
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US2416499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |