US3389971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-type soot eliminator
Assignee: Individual
•
Filing: 1967-06-14
•
Granted: 1968-06-25
•
Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Alliger Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:57
CPC Classifications
B; B05; B05B; B05B17/00; B05B17/04; B05B17/06; B05B17/0607; B01; B01D; B01D47/00; B01D47/06; B01D49/00; B01D49/006; B01D53/00; B01D53/007; F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; B01D2259/00; B01D2259/80; B01D2259/816; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02A50/2351; Y10; Y10S; Y10S261/00; Y10S261/09; Y10S261/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126003A
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US771406A
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US967135A
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US1269724A
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US2045519A
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DE1063578B
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US2935375A
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US3094400A
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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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |