US3461650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of discharging dust precipitated in an electrostatic precipitator
Assignee: Svenska Flaktfabriken AB
•
Filing: 1966-03-29
•
Granted: 1969-08-19
•
Expires: 1986-03-29
Abstract
No abstract record available.
Inventors
- 👤 Gosta Mildh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:06
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/88; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |