US2581550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion molding machine
Assignee: Individual
•
Filing: 1944-06-20
•
Granted: 1952-01-08
•
Expires: 1964-06-20
Abstract
No abstract record available.
Inventors
- 👤 Charles C Misfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:08
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/21; B21C35/00; B21C35/06; B29; B29C; B29C45/00; B29C45/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US493945A
Cited
US1664990A
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DE593621C
Cited
US1331169A
Cited
US1555284A
Cited
GB419628A
Cited
US2293087A
Cited
US2225424A
Cited
US2356338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |