Number | Date | Country | Kind |
---|---|---|---|
4-106696 | Apr 1992 | JPX | |
4-106697 | Apr 1992 | JPX | |
4-106698 | Apr 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1850836 | Guinot | Mar 1932 | |
3127450 | Lorette et al. | Mar 1964 | |
4613411 | Hsu et al. | Sep 1986 |
Number | Date | Country |
---|---|---|
716541 | Oct 1954 | GBX |
1379444 | Jan 1975 | GBX |
Entry |
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Patent Abstracts of Japan, vol. 14, No. 197 (C-712)(4140) 23 Apr. 1990. |