Patent US2075574A successfully refreshed from Google Patents.
US2075574A
Expired / Lapsed
US
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Alignment maintenance for the rolls of rolling mills
Assignee: Siemens Industry Inc
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Filing: 1932-01-11
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Granted: 1937-03-30
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Expires: 1952-01-11
Abstract
No abstract record available.
Inventors
- 👤 Frank P Dahlstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:43
CPC Classifications
B; B21; B21B; B21B13/00; B21B13/02; B21B13/023; B21B31/00; B21B31/16; B21B31/20; B21B31/22; B21B31/30; B21B31/24; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-03-29 | 1940-09-28 | 1941-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-29 | 1944-09-28 | 1945-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-29 | 1948-09-28 | 1949-03-30 | $7700.00 | Window Closed / Lapsed |