Number | Date | Country | Kind |
---|---|---|---|
3337024 | Oct 1983 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3758462 | Siegrist et al. | Sep 1976 | |
3954475 | Bonham et al. | May 1976 | |
3987037 | Bonham et al. | Oct 1976 | |
4166176 | Eckstein et al. | Aug 1979 | |
4189323 | Buhr | Feb 1980 | |
4239850 | Kita et al. | Dec 1980 |
Number | Date | Country |
---|---|---|
137452 | Apr 1985 | EPX |
1388492 | Mar 1975 | GBX |
Entry |
---|
International application published under the Patent Cooperation Treaty (PCT) #WO81/02261, published Aug. 20, 1981. |