US2617319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cold-reducing tubular metal stock
Assignee: United States Steel Corp
•
Filing: 1949-02-24
•
Granted: 1952-11-11
•
Expires: 1969-02-24
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:37
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/02; B21J7/14; B21J7/16; B21J13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US16630A
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US2280352A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |