US2155860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic controlling device for tandem mills
Assignee: American Rolling Mill Co
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Filing: 1932-04-04
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Granted: 1939-04-25
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Expires: 1952-04-04
Abstract
No abstract record available.
Inventors
- 👤 Edwin B Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:45
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/48; B21B37/52; B21B1/00; B21B1/22; B21B1/24; B21B1/28; B21B1/30; B21B1/32; B21B1/36; B21B2265/00; B21B2265/18
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) | 1942-04-24 | 1942-10-24 | 1943-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-24 | 1946-10-24 | 1947-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-24 | 1950-10-24 | 1951-04-25 | $7700.00 | Window Closed / Lapsed |