US2583039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector
Assignee: W W SLY Manufacturing Co
•
Filing: 1949-06-01
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Granted: 1952-01-22
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Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 George A Boesger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:31
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/66; B01D46/70; B01D46/72; B01D46/02; B01D46/04; B01D46/42; B01D46/4272; B01D46/44; B01D46/46; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86212; Y10T137/86911; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR548298A
Cited
US1538292A
Cited
US1949540A
Cited
US2318395A
Cited
US2391534A
Cited
US2507335A
Cited
US2476942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |