Number | Name | Date | Kind |
---|---|---|---|
3954231 | Fraser | May 1976 | |
4116405 | Bacchi et al. | Sep 1978 | |
4365773 | Wolkovitch | Dec 1982 | |
4417708 | Negri | Nov 1983 | |
5224665 | Goldsberry et al. | Jul 1993 |
Number | Date | Country |
---|---|---|
577495 | Sep 1924 | FRX |
620149 | Apr 1927 | FRX |
Entry |
---|
Heincke, PCT Publication WO 84/01926 May 1984. |
Hall, PCT Publication WO 88/06551 Sep. 1988. |