Patent US5337466A successfully refreshed from Google Patents.
Patent US2742691A successfully refreshed from Google Patents.
US2742691A
Expired / Lapsed
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Method of making corrosion resistant clad steel
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1950-04-18
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Granted: 1956-04-24
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Expires: 1970-04-18
Abstract
No abstract record available.
Inventors
- 👤 Hans G Belitz
- 👤 Oliver F Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:55
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/22; B21B1/24; B21B1/26; C; C23; C23C; C23C16/00; C23C16/56; B21B1/38; B21B2001/383; B21B45/00; B21B45/02; B21B45/0203; B21B45/0209; B21B2045/0212
Claims Analysis
Total Claims: 0
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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) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |