US895729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of separating suspended particles from gaseous bodies.
Assignee: International Precipitation Co
•
Filing: 1907-07-09
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Granted: 1908-08-11
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Expires: 1927-07-09
Abstract
No abstract record available.
Inventors
- 👤 Frederick Gardner Cottrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:39
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/017; Y; Y10; Y10S; Y10S55/00; Y10S55/38
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) | 1911-08-11 | 1912-02-10 | 1912-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-08-11 | 1916-02-10 | 1916-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-08-11 | 1920-02-10 | 1920-08-11 | $7700.00 | Window Closed / Lapsed |