US3497194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the removal of dust from converter gases
Assignee: Gottfried Bischoff Bau Kompl Gasreinigungs und Wasserrueckkehlanlagen GmbH and Co KG
•
Filing: 1967-09-19
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Granted: 1970-02-24
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Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 Hans Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2815278A
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US3045990A
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US3134835A
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US3197186A
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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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |