US2686931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extruding beaded film
Assignee: EIDP Inc
•
Filing: 1952-10-27
•
Granted: 1954-08-24
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Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:34
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/84; G11B5/848; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/12; B29C48/25; B29C48/30; B29C48/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1350722A
Cited
US1252821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |