US2809750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel for extrusion press
Assignee: Schloemann AG
•
Filing: 1952-09-08
•
Granted: 1957-10-15
•
Expires: 1972-09-08
Abstract
No abstract record available.
Inventors
- 👤 Arenz Matthias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:27
CPC Classifications
B; B21; B21C; B21C25/00; B21C25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1445139A
Cited
US1869021A
Cited
GB308521A
Cited
US1989948A
Cited
US2237983A
Cited
US2231761A
Cited
US2385574A
Cited
US2698683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |