US2520337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruding machine
Assignee: Individual
•
Filing: 1947-12-29
•
Granted: 1950-08-29
•
Expires: 1967-12-29
Abstract
No abstract record available.
Inventors
- 👤 John E Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:14
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/228; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/465; B29C48/03; B29C48/07; B29C48/08; Y; Y10; Y10S; Y10S425/00; Y10S425/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |