Patent US2575231A successfully refreshed from Google Patents.
US2575231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical rolling mill
Assignee: Siemens Industry Inc
•
Filing: 1946-03-27
•
Granted: 1951-11-13
•
Expires: 1966-03-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph M O'malley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
B; B21; B21B; B21B13/00; B21B13/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1891579A
Cited
US2002531A
Cited
US1985405A
Cited
US2011686A
Cited
US2213714A
Cited
US2124677A
Cited
US2049842A
Cited
US2183388A
Cited
US2240362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |