Patent US5280781A successfully refreshed from Google Patents.
Patent US2187753A successfully refreshed from Google Patents.
US2187753A
Expired / Lapsed
US
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Method of and apparatus for rolling blanks
Assignee: MID WEST FORGE Co
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Filing: 1938-07-08
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Granted: 1940-01-23
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Expires: 1958-07-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Ruden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:42
CPC Classifications
B; B21; B21H; B21H1/00; B21H1/22; B21B; B21B13/00; B21B13/005; B21B31/00; B21B31/16; B21B31/20; B21B31/22; B21B31/24
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) | 1943-01-22 | 1943-07-24 | 1944-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-22 | 1947-07-24 | 1948-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-22 | 1951-07-24 | 1952-01-23 | $7700.00 | Window Closed / Lapsed |