Number | Date | Country | Kind |
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3-069996 | Apr 1991 | JPX | |
3-069997 | Apr 1991 | JPX | |
3-111946 | May 1991 | JPX | |
3-025521 | Feb 1992 | JPX |
Number | Name | Date | Kind |
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2022340 | Deane | Nov 1935 | |
2327617 | Bennett | Aug 1943 | |
3465580 | Cady et al. | Sep 1969 | |
3473374 | Leeper | Oct 1969 | |
3498122 | Odier et al. | Mar 1970 | |
3602042 | Mitchell | Aug 1971 | |
3979950 | Maxwell | Sep 1976 | |
4050299 | Maxwell | Sep 1977 | |
4379331 | Watson | Apr 1983 | |
4932252 | Bovenlander et al. | Jun 1990 | |
4986114 | Rothmann et al. | Jan 1991 |
Number | Date | Country |
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63-7345 | Jan 1988 | JPX |
Entry |
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English Abstract of Published Unexamined Patent Application No. 13131/1986. |
English Abstract of Published Unexamined Patent Application No. 21234/1990. |