Number | Date | Country | Kind |
---|---|---|---|
2-194187 | Jul 1990 | JPX | |
3-181882 | Jun 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2221776 | Carlson | Sep 1938 | |
2297691 | Carlson | Oct 1942 | |
2618552 | Wise | Nov 1952 | |
2874063 | Greig | Feb 1959 | |
4751102 | Adair et al. | Jun 1988 | |
4902604 | Yamaguchi et al. | Feb 1990 | |
5080994 | Breton et al. | Jan 1992 |
Number | Date | Country |
---|---|---|
0040977 | Dec 1981 | EPX |
0223587 | May 1987 | EPX |
0305054 | Mar 1989 | EPX |
0379157 | Jul 1990 | EPX |
17-23910 | Nov 1942 | JPX |
18-24748 | Oct 1943 | JPX |
50-75991 | Jun 1975 | JPX |
50-105555 | Aug 1975 | JPX |
57-130046 | Aug 1982 | JPX |
57-191650 | Nov 1982 | JPX |
60-155179 | Aug 1985 | JPX |
1-229084 | Sep 1989 | JPX |
1-271469 | Oct 1989 | JPX |
2-22370 | Jan 1990 | JPX |
Entry |
---|
Patent Abstracts of Japan, vol. 14, No. 191 (JP-A-02 037 364), Apr. 1990. |