Number | Date | Country | Kind |
---|---|---|---|
02-291/95 | Aug 1995 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
3610862 | Erlandson | Oct 1971 | |
4160892 | Opprechet et al. | Jul 1979 | |
4404447 | Kitamura et al. | Sep 1983 | |
4652714 | Mergey et al. | Mar 1987 | |
4732026 | Ban | Mar 1988 |
Number | Date | Country |
---|---|---|
0 547 322 A1 | Jun 1993 | EPX |
0 622 148 A1 | Nov 1994 | EPX |
2 178 682 | Feb 1987 | GBX |
Entry |
---|
Patent Abstracts of Japan; vol. 005, No. 132 (C-068), 22. Aug. 1981 & JP-A-56 065995 (Kawaski Steel Corp), 4. Jun. 1981. |