US1112007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing iron and steel directly from the ore
Assignee: Individual
•
Filing: 1912-06-13
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Granted: 1914-09-29
•
Expires: 1932-06-13
Abstract
No abstract record available.
Inventors
- 👤 Karl Albert Fredrik Hiorth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:34
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/12; C21B13/125
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) | 1917-09-28 | 1918-03-30 | 1918-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-09-28 | 1922-03-30 | 1922-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-09-28 | 1926-03-30 | 1926-09-29 | $7700.00 | Window Closed / Lapsed |