Patent US2871008A successfully refreshed from Google Patents.
US2871008A
Expired / Lapsed
US
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Apparatus for gas flushing of molten metal
Assignee: Air Liquide SA
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Filing: 1955-01-07
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Granted: 1959-01-27
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Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Spire Etienne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:06
CPC Classifications
B; B22; B22D; B22D1/00; B22D1/002; B22D1/005; C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US51401A
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US728261A
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US1390694A
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US1763248A
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US1836196A
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US2265511A
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US2510932A
Cited
GB684048A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |