US2546937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for delivering a fluid into a furnace
Assignee: Republic Steel Corp
•
Filing: 1949-01-07
•
Granted: 1951-03-27
•
Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 John J Wyandt
- 👤 James K Mckelvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:22
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; C21C5/4613
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1220343A
Cited
US1384224A
Cited
US1376935A
Cited
US1414438A
Cited
US2169948A
Cited
US2446511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |