Number | Date | Country | Kind |
---|---|---|---|
9381063 | Sep 1993 | EPX |
Number | Name | Date | Kind |
---|---|---|---|
2452989 | Brown | Nov 1948 | |
3057120 | Yingst | Oct 1962 | |
5179806 | Brown et al. | Jan 1993 |
Number | Date | Country |
---|---|---|
0512956A1 | Nov 1992 | EPX |
1129935 | Jan 1957 | FRX |
60-31621 | Jul 1985 | JPX |
62-100847 | Jun 1987 | JPX |
1-301038 | Dec 1989 | JPX |
2-109673 | Apr 1990 | JPX |
2-224970 | Sep 1990 | JPX |
4-42336 | Apr 1992 | JPX |
0102414 | Dec 1916 | GBX |
Entry |
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Patent Abstracts of Japan, vol. 14, No. 91, Feb. 20, 1990. |