US2624560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft furnace
Assignee: Arthur G McKee and Co
•
Filing: 1949-01-18
•
Granted: 1953-01-06
•
Expires: 1969-01-18
Abstract
No abstract record available.
Inventors
- 👤 John J Craig
- 👤 Joseph E Dunasky
- 👤 Milton F Morgan
- 👤 Foell Adolph Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20; F; F27; F27B; F27B1/00; F27B1/10; F27B1/21; F27B21/00; F27B21/06
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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |