US3063686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke purifier
Assignee: Individual
•
Filing: 1960-11-21
•
Granted: 1962-11-13
•
Expires: 1980-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ward M Irvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:39
CPC Classifications
F; F23; F23J; F23J11/00; B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; B01D47/022; F23J15/00; F23J15/02; F23J15/022; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR338596A
Cited
US980257A
Cited
US1096501A
Cited
US1252731A
Cited
US1939949A
Cited
US2070578A
Cited
US2721064A
Cited
US2826397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |