US2767806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet dust separator
Assignee: Individual
•
Filing: 1953-07-02
•
Granted: 1956-10-23
•
Expires: 1973-07-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:43
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; B01D45/10; B01D47/00; B01D47/02; B01D47/024; B01D47/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1007356A
Cited
US1980522A
Cited
GB479857A
Cited
US2337993A
Cited
US2675215A
Cited
US2585440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |