Number | Name | Date | Kind |
---|---|---|---|
2995261 | Soyland et al. | Aug 1961 | |
3589539 | Witwer | Jun 1971 | |
4029225 | Wirt | Jun 1977 |
Number | Date | Country |
---|---|---|
0399043 | Nov 1990 | EPX |
1100901 | Mar 1961 | DEX |
6466319 | Mar 1989 | JPX |
4155022 | May 1992 | JPX |
Entry |
---|
Patent Abstracts of Japan vol. 016, No. 446 (M-1311) 17 Sep. 1992 & JP-A-41 55 022 (Komatsu Ltd.) 28 May 1992. |
Patent Abstracts of Japan vol. 015, No. 093 (M-1089) 6 Mar. 1991 & JP-A-23 08 016 (Komatsu Ltd.). |
Patent Abstracts of Japan vol. 013, No. 398 (M-866) 5 Sep. 1989 & JP-A-11 42 135 (Komatsu Ltd.). |