Patent US2578552A successfully refreshed from Google Patents.
US2578552A
Expired / Lapsed
US
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Drier section for paper machines
Assignee: Beloit Iron Works Inc
•
Filing: 1948-10-06
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Granted: 1951-12-11
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Expires: 1968-10-06
Abstract
No abstract record available.
Inventors
- 👤 Hornbostel Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:50
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1314994A
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US1049610A
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US1670832A
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US1857222A
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US2089940A
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US2269685A
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US2126486A
Cited
US2268296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |