Patent US1856685A successfully refreshed from Google Patents.
US1856685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating solids from gases
Assignee: International Precipitation Co
•
Filing: 1928-05-19
•
Granted: 1932-05-03
•
Expires: 1948-05-19
Abstract
No abstract record available.
Inventors
- 👤 Anderson Evald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
B; B01; B01D; B01D50/00; B01D46/00; B01D46/0039; B01D46/0041; B01D46/0046; B01D46/24; B01D46/2403; B01D2275/00; B01D2275/20; B01D2275/201
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1935-05-03 | 1935-11-02 | 1936-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-03 | 1939-11-02 | 1940-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-03 | 1943-11-02 | 1944-05-03 | $7700.00 | Window Closed / Lapsed |