Patent US3611754A successfully refreshed from Google Patents.
US3611754A
Expired / Lapsed
US
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Textile material and manufacture
Assignee: Naehwirkmaschinenbau Malimo Karl Marx Stadt VEB
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Filing: 1969-06-02
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Granted: 1971-10-12
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Expires: 1989-06-02
Abstract
Abstract A RUN-RESISTANT TEXTILE MATERIAL INCLUDES S KNITTED STRUCTURE OF WARP THREADS ON A BACKING LAYER OF LOOSE FIBROUS MATERIAL. INDIVIDUAL FIBERS ARE PULLED OUT OF THE LAYER BY NOTCHED KNITTING NEEDLES OF A WARP KNITTING MACHINE AND FORMED INTO LOOPS TOGETHER WITH, AND UNDERLYING THE CHAIN SWITCHED WARP THREADS. THE FIBER LOOPS WHOSE ENDS ARE ANCHORED IN THE BACKING LAYER PROTECT THE FABRIC FROM LADDERING WHEN A SINGLE STITCH IS BROKEN.
Inventors
- 👤 Engelbert Ehrlich
- 👤 Martin Schonfuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:32
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B23/00; D04B23/10
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |