Patent US2650674A successfully refreshed from Google Patents.
US2650674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector
Assignee: Individual
•
Filing: 1950-11-10
•
Granted: 1953-09-01
•
Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Thrailkill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:58
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D46/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US407948A
Cited
US1062942A
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US1088041A
Cited
US1130596A
Cited
US1484260A
Cited
US1341129A
Cited
US1755011A
Cited
US1944268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |