US2657428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of filament-forming materials
Assignee: Acordis UK Ltd
•
Filing: 1949-09-10
•
Granted: 1953-11-03
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Expires: 1969-09-10
Abstract
No abstract record available.
Inventors
- 👤 Upton Edward James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:28
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/04; B; B29; B29B; B29B13/00; B29B13/02; B29B13/022; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/285; B29C48/286; B29C48/288; D01D1/06; D01D5/00; D01D5/08; B29C48/36; B29C48/475
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1671079A
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US1680952A
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US1874799A
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US2075735A
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US2229489A
Cited
US2287277A
Cited
US2367173A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |