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US392468A
Expired / Lapsed
US
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Process of reducing or drawing out steel ingots
Assignee: —
•
Filing: —
•
Granted: 1888-11-06
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Expires: 1905-11-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; B23Q3/086; C; C10; C10M; C10M7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812; Y10T29/49972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1891-11-06 | 1892-05-07 | 1892-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1895-11-06 | 1896-05-07 | 1896-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1899-11-06 | 1900-05-08 | 1900-11-07 | $7700.00 | Window Closed / Lapsed |