Number | Name | Date | Kind |
---|---|---|---|
4044185 | McCaskey, Jr. et al. | Aug 1977 | |
4315967 | Prior et al. | Feb 1982 | |
4472474 | Grosheim et al. | Sep 1984 |
Number | Date | Country |
---|---|---|
0003481 | Aug 1979 | EPX |
59-071333 | JPX | |
818652 | Jan 1960 | GBX |
2225794 | Jun 1990 | GBX |
2255981 | Nov 1992 | GBX |
Entry |
---|
European Search Report (Jul. 30, 1993). |