Number | Name | Date | Kind |
---|---|---|---|
4367909 | Shatto, Jr. et al. | Jan 1983 | |
4537455 | Vertenten et al. | Aug 1985 | |
4600259 | Olsson | Jul 1986 | |
4693533 | Szczesny et al. | Sep 1987 | |
4747787 | Siwinski | May 1988 | |
4861272 | Clark | Aug 1989 | |
4869685 | Olsson | Sep 1989 |
Number | Date | Country |
---|---|---|
0282194 | Sep 1988 | EPX |
Entry |
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U.S. Pat. Appl. Ser. No. 07/502,941; filed Mar. 20, 1990. |