US2645842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple rolling of strip
Assignee: United States Steel Corp
•
Filing: 1947-02-28
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Granted: 1953-07-21
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Expires: 1967-02-28
Abstract
No abstract record available.
Inventors
- 👤 Howard S Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:38
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/38; Y; Y10; Y10T; Y10T29/00; Y10T29/30; Y10T29/301; Y10T29/303; Y10T29/304; Y10T29/305; Y10T29/306; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |