US2124741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for working metal
Assignee: Midland Steel Products Co
•
Filing: 1936-04-18
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Granted: 1938-07-26
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Expires: 1956-04-18
Abstract
No abstract record available.
Inventors
- 👤 Alex W Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/02; B21D19/04; B21D19/046; B21D41/00; B21D41/04
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) | 1941-07-25 | 1942-01-24 | 1942-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-25 | 1946-01-24 | 1946-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-25 | 1950-01-24 | 1950-07-26 | $7700.00 | Window Closed / Lapsed |