Number | Name | Date | Kind |
---|---|---|---|
3944695 | Kosaka et al. | Mar 1976 | |
4235761 | Koenig | Nov 1980 | |
4280939 | Johnson | Jul 1981 | |
4404299 | Decroix | Sep 1983 | |
5036129 | Atwell et al. | Jul 1991 | |
5041482 | Ornsteen et al. | Aug 1991 |
Number | Date | Country |
---|---|---|
2017546 | Oct 1979 | GBX |
Entry |
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Patent Cooperation Treaty International Search Report mailed Mar. 5, 1992. |