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Patent US3019894A successfully refreshed from Google Patents.
US3019894A
Expired / Lapsed
US
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Extrusion of metals
Assignee: Cefilac SA
•
Filing: 1958-11-12
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Granted: 1962-02-06
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Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Delcroix Jean
- 👤 Hubert Rene
- 👤 Heintz Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:39
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/21; B21C23/212; B21C35/00; B21C35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2389876A
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US2656743A
Cited
US2728453A
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FR1054873A
Cited
DE1028963B
Cited
US2896782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |