Patent US5477219A successfully refreshed from Google Patents.
Patent US3377830A successfully refreshed from Google Patents.
US3377830A
Expired / Lapsed
US
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Method and apparatus for reducing strip
Assignee: United States Steel Corp
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Filing: 1965-06-18
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Granted: 1968-04-16
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Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 John A Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:17
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/05; B21B; B21B1/00; B21B1/22; B21B1/222; B21F; B21F9/00; B21F9/005; B21F9/007
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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |