Number | Date | Country | Kind |
---|---|---|---|
61-187995 | Aug 1986 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3408194 | Loria | Oct 1968 | |
3894875 | Cameron et al. | Jul 1975 | |
3933501 | Cameron et al. | Jan 1976 | |
4401752 | Lau | Aug 1983 |
Entry |
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U.S. patent application Ser. No. 07/046,750, Ogawa et al, filed 5-7-87. |