US691474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling iron in blast-furnaces.
Assignee: CHARLES S GOODING
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Filing: 1899-07-25
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Granted: 1902-01-21
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Expires: 1919-07-25
Abstract
No abstract record available.
Inventors
- 👤 Luther Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
F; F27; F27B; F27B3/00; F27B3/10; F27B3/20
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) | 1905-01-20 | 1905-07-22 | 1906-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-01-20 | 1909-07-22 | 1910-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-01-20 | 1913-07-22 | 1914-01-21 | $7700.00 | Window Closed / Lapsed |