US2763903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for melting and casting refractory material
Assignee: Allegheny Ludlum Steel Corp
•
Filing: 1953-07-09
•
Granted: 1956-09-25
•
Expires: 1973-07-09
Abstract
No abstract record available.
Inventors
- 👤 Schuyler A Herres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:52
CPC Classifications
C; C22; C22B; C22B34/00; B; B22; B22D; B22D7/00; B22D7/005; C22B4/00; C22B4/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734244A
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US894410A
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US2060133A
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US2303973A
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US2445670A
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US2541764A
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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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |