Number | Date | Country | Kind |
---|---|---|---|
2-252988 | Sep 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1769153 | Meyer | Jul 1930 | |
2489887 | Houghton | Nov 1949 | |
2849173 | Surdy | Aug 1958 | |
4066386 | Johnson et al. | Jan 1978 | |
4087197 | Haugen | May 1978 | |
4789314 | Higuchi et al. | Dec 1988 | |
4943215 | Berges | Jul 1990 |
Number | Date | Country |
---|---|---|
0272767 | Jun 1988 | EPX |
0332741 | Sep 1989 | EPX |
0448750 | Oct 1991 | EPX |
2056353 | May 1972 | DEX |
2-642479 | Aug 1990 | FRX |
59-229072 | Dec 1984 | JPX |
61-197793 | Sep 1986 | JPX |
62-107287 | May 1987 | JPX |
62-189388 | Aug 1987 | JPX |
1-247787 | Oct 1989 | JPX |
2-245493 | Oct 1990 | JPX |
Entry |
---|
Patent Abstracts of Japan, vol. 12, No. 39, Feb. 1988 & JP-A-62 189 388 Aug. 19, 1987. |