US2893554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extruding metals
Assignee: COMPTOIR IND ETIRAGE
•
Filing: 1952-11-07
•
Granted: 1959-07-07
•
Expires: 1972-11-07
Abstract
No abstract record available.
Inventors
- 👤 Sejournet Jacques
- 👤 Bonnassieux Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US79896A
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CH234397A
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US2538917A
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US2538918A
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US2630220A
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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) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |