Number | Date | Country | Kind |
---|---|---|---|
9401899 | Feb 1994 | GBX | |
9418797 | Sep 1994 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3628829 | Heilig | Dec 1971 | |
4603030 | McCarthy | Jul 1986 | |
4629604 | Spector | Dec 1986 | |
5393074 | Bear et al. | Feb 1995 | |
5486141 | Ohga et al. | Jan 1996 |
Number | Date | Country |
---|---|---|
1356435 | Jun 1974 | GBX |
2254930 | Oct 1992 | GBX |
Entry |
---|
WPI Abstract Acc No. 92-023204/03 Dec. 25, 1991. |
WPI Abstract Acc No. 84-177169/29 May 31, 1984. |