US2726458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced circulation horizontal cooling apparatus for continuous strip furnace
Assignee: Electric Furnace Co
•
Filing: 1951-08-08
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Granted: 1955-12-13
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Expires: 1971-08-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/573
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE16699E
Cited
FR387325A
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US1508283A
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US1729675A
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US1753828A
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US2217452A
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GB530352A
Cited
FR878517A
Cited
US2483605A
Cited
US2460150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |