Number | Date | Country | Kind |
---|---|---|---|
2-73283[U] | Jul 1990 | JPX | |
2-181827 | Jul 1990 | JPX | |
2-81761[U] | Aug 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2981224 | Phelps | Apr 1961 | |
4387663 | Alheid | Jun 1983 | |
4398494 | Alheid | Aug 1983 |
Number | Date | Country |
---|---|---|
3724374 | Feb 1988 | DEX |
2106015 | Apr 1983 | GBX |
2194744 | Mar 1988 | GBX |
Entry |
---|
Patent Abstract of Japan, vol. 14, No. 294 Jun. 26, 1990 JP-A-02 095 473 (Mitsubishi Heavy Ind. Ltd) Apr. 6, 1990. |