US3415696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing silicon steel laminations having a very large grain size after final anneal
Assignee: Jones and Laughlin Steel Corp
•
Filing: 1965-08-16
•
Granted: 1968-12-10
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Gimigliano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:41
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/02; C21; C21D; C21D8/00; C21D8/12; C21D8/1216; C21D8/1233; C21D8/1244; C21D8/1255; C21D8/1266; C21D8/1277
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) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |