Number | Name | Date | Kind |
---|---|---|---|
1860314 | Mendel | May 1932 | |
2652705 | Weinberg | Sep 1953 | |
3757541 | Frohlich | Sep 1973 | |
4370871 | Nakagaki et al. | Feb 1983 | |
4422930 | Hatanaka | Dec 1983 | |
4527404 | Nakagaki et al. | Jul 1985 | |
5353486 | Schmidt et al. | Nov 1994 |
Number | Date | Country |
---|---|---|
2297277 | Sep 1976 | FRX |
Entry |
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Pile Fabric Knitting: Knitting International, Sep. 1974. |
Ring Lace Brochure; High Rate Biological Filtration Elements for Sewage & Wastewater Treatment. |
Nitivy Company Limited Brochure, Salvron Export Division; Oct. 1989. |