Number | Date | Country | Kind |
---|---|---|---|
980152 | Jan 1998 | FI |
Number | Name | Date | Kind |
---|---|---|---|
3981767 | Al-Shaikh | Sep 1976 | |
4081995 | Griffith et al. | Apr 1978 | |
4571530 | Sweeney, Jr. | Feb 1986 | |
4814704 | Zerrien, Jr. et al. | Mar 1989 | |
5297048 | Gauer | Mar 1994 | |
5317614 | Davis et al. | May 1994 |
Number | Date | Country |
---|---|---|
2225415 | Nov 1988 | GB |
60-262010 | Dec 1985 | JP |
9320346 | Oct 1993 | WO |
Entry |
---|
Patent Abstract of Japan of JP 60262010 of Dec. 1985. |