Patent US2897698A successfully refreshed from Google Patents.
US2897698A
Expired / Lapsed
US
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Continuous treatment of metal strip
Assignee: Jones and Laughlin Steel Corp
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Filing: 1955-04-06
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Granted: 1959-08-04
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Expires: 1975-04-06
Abstract
No abstract record available.
Inventors
- 👤 Lawson Van Ormer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:27
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/02; C21D8/0221; C21D8/0236; C21D11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1721350A
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US1819764A
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US2035312A
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US2154928A
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US2292511A
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US2660077A
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US2606848A
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US2680978A
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US2668706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |