Patent US1905332A successfully refreshed from Google Patents.
US3559239A
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Multilayer extrusion die
Assignee: Primerica Inc
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Filing: 1968-02-27
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Granted: 1971-02-02
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Expires: 1988-02-27
Abstract
Abstract AN IMPROVED EXTRUSION DIE FOR THE SIMULTANEOUS EXTRUSION OF MULTILAYER FLAT FILMS OR SHEETS OF THERMOPLASTIC MATERIALS WHEREIN IMPROVED FLOW PASSAGES BETWEEN A PLURALITY OF MANIFOLDS SUPPLYING MATERIAL FROM SEPARATE SOURCES OF RESINS AND A COMMON FLOW PASSAGE ARE PROVIDED.
Inventors
- 👤 William A Work
- 👤 George A Huppenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21; B29C48/30; B29C48/305; B29C48/307
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |