Patent US2069758A successfully refreshed from Google Patents.
US2069758A
Expired / Lapsed
US
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Ferrous metal and process for producing same
Assignee: American Rolling Mill Co
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Filing: 1932-03-14
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Granted: 1937-02-09
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Expires: 1952-03-14
Abstract
No abstract record available.
Inventors
- 👤 Hayes Anson
- 👤 Ralph O Griffis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:05
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21D; C21D8/00; C21D8/02; C21D8/04; C21D8/0447; C21D8/0463; C21D8/0247
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) | 1940-02-09 | 1940-08-10 | 1941-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-09 | 1944-08-10 | 1945-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-09 | 1948-08-10 | 1949-02-09 | $7700.00 | Window Closed / Lapsed |