US2709529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging slabs into melting furnace
Assignee: American Smelting and Refining Co
•
Filing: 1951-07-13
•
Granted: 1955-05-31
•
Expires: 1971-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Arnold J Kleff
- 👤 Fernando A Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:25
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/0025; F27B; F27B3/00; F27B3/06; F27B3/08; F27B3/085; F27D2003/0034; F27D2003/0065; F27D3/04; F27M; F27M2001/00; F27M2001/01; F27M2001/15; F27M2001/1539; F27M2001/1547; F27M2001/1552; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |