Patent US3496744A successfully refreshed from Google Patents.
US3496744A
Expired / Lapsed
US
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Method and apparatus for controlling the contours of rolling mill rolls to obtain metal sheet or strip of superior flatness
Assignee: Sumitomo Light Metal Industries Ltd
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Filing: 1967-01-31
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Granted: 1970-02-24
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Expires: 1987-01-31
Abstract
No abstract record available.
Inventors
- 👤 Shizuo Mizuno
- 👤 Masao Ando
- 👤 Michio Wasida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
B; B21; B21B; B21B38/00; B21B38/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2295399A
Cited
US2728223A
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US3026714A
Cited
US3201985A
Cited
US3194055A
Cited
US3315506A
Cited
US3334508A
Cited
US3321838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |