US2370469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extrusion of organic materials
Assignee: EIDP Inc
•
Filing: 1940-11-30
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Granted: 1945-02-27
•
Expires: 1960-11-30
Abstract
No abstract record available.
Inventors
- 👤 Charles R Johnson
- 👤 Roland R Nydegger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:58
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/15; B29C48/36; B29C48/395; B29C48/50; B29C48/505; B29C48/63; B29C48/86; B29C48/865; B29C48/03; B29C48/05
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) | 1948-02-27 | 1948-08-28 | 1949-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-27 | 1952-08-28 | 1953-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-27 | 1956-08-28 | 1957-02-27 | $7700.00 | Window Closed / Lapsed |