Patent US1676969A successfully refreshed from Google Patents.
US1676969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-fan combined dust-collecting and air-supply system for pneumatic separators and cleaners
Assignee: Individual
•
Filing: 1923-12-03
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Granted: 1928-07-10
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Expires: 1943-12-03
Abstract
No abstract record available.
Inventors
- 👤 Sutton Henry Moore
- 👤 Steele Walter Livingston
- 👤 Steele Edwin Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:29
CPC Classifications
B; B07; B07B; B07B11/00; Y; Y10; Y10S; Y10S55/00; Y10S55/18
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) | 1931-07-10 | 1932-01-09 | 1932-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-10 | 1936-01-09 | 1936-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-10 | 1940-01-09 | 1940-07-10 | $7700.00 | Window Closed / Lapsed |