US1077243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of recovering escaping acid-gases from sulfite-towers.
Assignee: Individual
•
Filing: 1911-11-13
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Granted: 1913-10-28
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Expires: 1931-11-13
Abstract
No abstract record available.
Inventors
- 👤 Judson A De Cew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:51
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; Y; Y10; Y10S; Y10S261/00; Y10S261/72; Y10S423/00; Y10S423/03
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) | 1916-10-27 | 1917-04-28 | 1917-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-10-27 | 1921-04-28 | 1921-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-10-27 | 1925-04-28 | 1925-10-28 | $7700.00 | Window Closed / Lapsed |