US3476321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multifuel burners
Assignee: Cockerill SA
•
Filing: 1967-07-24
•
Granted: 1969-11-04
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Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Jean Marie Levaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:26
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0001; F27D99/0033; F23; F23D; F23D17/00; F27B; F27B3/00; F27B3/10; F27B3/20; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |