US2465822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover for crucible furnaces
Assignee: LAVA CRUEIBLE Co OF PITTS
•
Filing: 1947-10-18
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Granted: 1949-03-29
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Expires: 1967-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Furman South
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:14
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/08; F27B14/10; F27B14/12; F27D; F27D1/00; F27D1/18; F27D1/1808; F27D2001/1825; F27D2001/185
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) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |