Patent US2882033A successfully refreshed from Google Patents.
US2882033A
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Method for making cement clinker
Assignee: United States Steel Corp
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Filing: 1957-04-18
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Granted: 1959-04-14
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Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:59
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B7/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE520547A
Cited
AT70686B
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US2090868A
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US2409707A
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US2650084A
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US2498719A
Cited
US2668041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |