US982243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurizing apparatus for refractory ores.
Assignee: ORE DESULPHURIZATION Co
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Filing: 1909-10-11
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Granted: 1911-01-24
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Expires: 1929-10-11
Abstract
No abstract record available.
Inventors
- 👤 Charles Anderson Case
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:41
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/002; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40
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) | 1914-01-23 | 1914-07-25 | 1915-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-23 | 1918-07-25 | 1919-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-23 | 1922-07-25 | 1923-01-24 | $7700.00 | Window Closed / Lapsed |