Patent US3001236A successfully refreshed from Google Patents.
US3001236A
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US
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Hot stretching of polyacrylonitrile yarns with draw point located on feed roller
Assignee: Bayer AG
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Filing: 1958-07-16
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Granted: 1961-09-26
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Expires: 1978-07-16
Abstract
No abstract record available.
Inventors
- 👤 Maier Walter
- 👤 Bernklau Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:57
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; D01; D01F; D01F6/00; D01F6/28; D01F6/38; D02J1/224; Y; Y10; Y10S; Y10S264/00; Y10S264/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2289232A
Cited
US2611923A
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US2768057A
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US2811409A
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US2871458A
Cited
US2859472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |