Patent US2594819A successfully refreshed from Google Patents.
US2594819A
Expired / Lapsed
US
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Flange rolling mill
Assignee: YOUNGSTOWN STEEL TANK Co
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Filing: 1948-01-17
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Granted: 1952-04-29
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Expires: 1968-01-17
Abstract
No abstract record available.
Inventors
- 👤 Charles E Stenson
- 👤 Alden W Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:20
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/02; B21D19/04; B21D19/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US205241A
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US314615A
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US318889A
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US766826A
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US1259306A
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US1288147A
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US1772500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |