US709358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of desulfurizing furnace-gases.
Assignee: Individual
•
Filing: 1902-03-10
•
Granted: 1902-09-16
•
Expires: 1922-03-10
Abstract
No abstract record available.
Inventors
- 👤 Emil Pollacsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508
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) | 1905-09-15 | 1906-03-17 | 1906-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-09-15 | 1910-03-17 | 1910-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-09-15 | 1914-03-17 | 1914-09-16 | $7700.00 | Window Closed / Lapsed |