US3426507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical precipitator
Assignee: Joy Manufacturing Co
•
Filing: 1964-12-23
•
Granted: 1969-02-11
•
Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Kazimierz Kossowski
- 👤 Harley G Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:50
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87442; Y10T137/87467; Y10T137/87483; Y10T137/87507; Y10T74/00; Y10T74/18; Y10T74/1836; Y10T74/184; Y10T74/18856; Y10T74/20; Y10T74/20396
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |