Number | Date | Country | Kind |
---|---|---|---|
19893 A/86 | Mar 1986 | ITX |
Number | Name | Date | Kind |
---|---|---|---|
2875257 | Thompson | Feb 1959 | |
3033898 | Bray | May 1962 | |
3681442 | Bloch et al. | Aug 1972 | |
4269789 | Zornes | May 1981 | |
4361520 | Luetzelschwab | Nov 1982 |
Entry |
---|
English Language Abstract of EPO 131,913. |