Patent US916487A successfully refreshed from Google Patents.
US916487A
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Ore-reducing furnace.
Assignee: AMERICAN REDUCTION Co
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Filing: 1906-11-20
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Granted: 1909-03-30
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Expires: 1926-11-20
Abstract
No abstract record available.
Inventors
- 👤 George Frederick Rendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:34
CPC Classifications
F; F27; F27B; F27B7/00
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) | 1912-03-29 | 1912-09-28 | 1913-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-29 | 1916-09-28 | 1917-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-29 | 1920-09-28 | 1921-03-30 | $7700.00 | Window Closed / Lapsed |