US2950816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in controlling the cooling of a hollow mandrel in a metal extrusion press
Assignee: Schloemann AG
•
Filing: 1957-11-18
•
Granted: 1960-08-30
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Expires: 1977-11-18
Abstract
No abstract record available.
Inventors
- 👤 Arenz Matthias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:54
CPC Classifications
B; B21; B21C; B21C31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2658687A
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Cited
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GB757347A
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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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |