Patent US3533222A successfully refreshed from Google Patents.
US3533222A
Expired / Lapsed
US
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De-dusting device for smoke and other gaseous fluids
Assignee: MEDITERRANEA IND COM Cia
•
Filing: 1966-08-31
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Granted: 1970-10-13
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Expires: 1986-08-31
Abstract
No abstract record available.
Inventors
- 👤 Enrico Gasperini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:33
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027; B; B01; B01D; B01D45/00; B01D45/12; B01D45/14; F23J1/00; F23J2700/00; F23J2700/001
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) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |