US3709969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for continuously extruding net-like structures composed of twisted multifilament yarns
Assignee: FMC Corp
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Filing: 1971-01-05
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Granted: 1973-01-09
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Expires: 1991-01-05
Abstract
Abstract METHOD OF MAKING NET-LIKE STRUCTURES IN WHICH PAIRED GROUPS OF EXTRUDED FILAMENTS ARE PERIODICALLY SHIFTED TO PROVIDE DIFFERNT PAIRS, WHILE THE FILAMENTS IN EACH SUCH GROUP ARE TWISTED INTO A YARN. ALTERNATELY WITH SUCH SHIFTING, THE PAIRED GROUPS OF FILAMENTS AR ROTATED A MULTIPLE OF 180* ABOUT AND AXIS BETWEEN THE GROUP OF EACH SUCH PAIR. D R A W I N G
Inventors
- 👤 T Fairbanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/345; B29C48/03; B29C48/05; B29C48/07; B29C48/08; B29C48/09; B29C48/10; B29C48/13; B29C48/32; B29C48/33; B29L; B29L2028/00; Y; Y10; Y10S; Y10S264/00; Y10S264/81
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |