US2290752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling extruder
Assignee: Proctor and Schwartz Inc
•
Filing: 1939-08-15
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Granted: 1942-07-21
•
Expires: 1959-08-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Hurxthal
- 👤 John J Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:00
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/228; F; F26; F26B; F26B25/00; F26B25/001; F26B25/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-07-20 | 1946-01-19 | 1946-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-20 | 1950-01-19 | 1950-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-20 | 1954-01-19 | 1954-07-21 | $7700.00 | Window Closed / Lapsed |