Patent US3190747A successfully refreshed from Google Patents.
US3190747A
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US
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System for recovering waste gases from a metal refining zone
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1962-07-17
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Granted: 1965-06-22
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Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 Namy Gerald
- 👤 Fillon Jacques Dumont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:19
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0073; F27D99/0075; C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; F27D17/00; F27D17/20; F27D17/30; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866824A
Cited
US2831762A
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US2902358A
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US2977217A
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US3022990A
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US3118759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |