Patent US2983502A successfully refreshed from Google Patents.
US2983502A
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Method and apparatus for annealing coils of metal strip
Assignee: United States Steel Corp
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Filing: 1953-10-21
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Granted: 1961-05-09
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Expires: 1973-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert E Mcclure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:19
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/663
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1503639A
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US1870551A
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US2041312A
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US2201308A
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US2391447A
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US2479102A
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US2465511A
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US2602440A
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US2607577A
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US2671656A
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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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |