Number | Date | Country | Kind |
---|---|---|---|
2-10575 | Jan 1990 | JPX | |
2-263892 | Oct 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3891443 | Halpern et al. | Jun 1975 | |
3984582 | Feder et al. | Oct 1976 | |
4394435 | Farber et al. | Jul 1983 | |
4447510 | Frass et al. | May 1984 |
Number | Date | Country |
---|---|---|
0037060 | Jul 1981 | EPX |
0185280 | Jun 1986 | EPX |
9002359 | Mar 1990 | WOX |
2139777 | Nov 1984 | GBX |
Entry |
---|
USSN 07/392,536, Aug. 15, 1989. |