US3544710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the operation of a shaft furnace
Assignee: Centre de Recherches Metallurgiques CRM ASBL
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Filing: 1967-09-11
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Granted: 1970-12-01
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur Poos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:36
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/07; C; C21; C21B; C21B7/00; C21B7/24; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01J5/0044; G01J5/0275; G06; G06T; G06T7/00; G01J2005/0077
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |