Number | Name | Date | Kind |
---|---|---|---|
3517514 | Visser | Jun 1970 | |
3716998 | Lerche-Svendsen et al. | Feb 1973 | |
3867250 | Jankowiak et al. | Feb 1975 | |
4135843 | Umemoto et al. | Jan 1979 | |
4306929 | Menikheim | Dec 1981 | |
4353946 | Bowers | Oct 1982 | |
4476078 | Tao | Oct 1984 | |
4580960 | Apman | Apr 1986 | |
4635576 | Bowers | Jan 1987 | |
4896993 | Bohnhoff | Jan 1990 | |
5249893 | Romanek et al. | Oct 1993 | |
5257878 | Peterson | Nov 1993 | |
5330828 | Jacobsen | Jul 1994 | |
5429450 | Meidinger | Jul 1995 |
Number | Date | Country |
---|---|---|
2263684 | Jul 1974 | DEX |
Entry |
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American Excelsion Company, Erosion Control Products Brochure. |