US2492682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes of producing glass coated silicon steel
Assignee: Armco Inc
•
Filing: 1945-07-23
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Granted: 1949-12-27
•
Expires: 1965-07-23
Abstract
No abstract record available.
Inventors
- 👤 Victor W Carpenter
- 👤 Samuel A Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:08
CPC Classifications
C; C23; C23C; C23C24/00; C03; C03C; C03C8/00; C21; C21D; C21D8/00; C21D8/12; C21D9/00; C21D9/46; C23D; C23D5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |