Number | Date | Country | Kind |
---|---|---|---|
2-318853 | Nov 1990 | JPX | |
2-318854 | Nov 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2630751 | Cranston et al. | Mar 1953 | |
3031368 | Zent | Apr 1962 | |
3245860 | Aurich et al. | Apr 1966 | |
3547737 | Vici | Dec 1970 | |
3580785 | Mihalkanin | May 1971 | |
4264398 | Pruitt | Apr 1981 | |
4436550 | Ferree | Aug 1982 | |
4502905 | Jung et al. | Mar 1985 | |
4602976 | Fukuda et al. | Jul 1986 | |
4756143 | Lancaster | Jul 1988 | |
4790896 | Schmalhotz | Dec 1988 | |
5041185 | Ohashi et al. | Aug 1991 |
Number | Date | Country |
---|---|---|
4032511 | Apr 1992 | DEX |
7321512 | Jan 1974 | FRX |
63-248616 | Oct 1988 | JPX |
Entry |
---|
European Search Report (Feb. 9, 1993). |