US2990575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for production of varying denier filaments
Assignee: Acordis UK Ltd
•
Filing: 1956-09-24
•
Granted: 1961-07-04
•
Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Gibbins Leslie Brisbane
- 👤 Riley Reginald Henry John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:10
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/227; D01; D01D; D01D5/00; D01D5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898085A
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US1909192A
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US1836105A
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FR748680A
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FR759928A
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US2120990A
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US2235889A
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GB489714A
Cited
US2181934A
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US2273106A
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US2337664A
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US2847703A
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US2932850A
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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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |