Number | Date | Country | Kind |
---|---|---|---|
3803805 | Feb 1988 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3726758 | Parker et al. | Apr 1973 | |
3839143 | Suckow | Oct 1974 | |
3884756 | Gustafson | May 1975 | |
3944464 | Means | Mar 1976 | |
3944774 | Halme et al. | Nov 1976 | |
4113556 | Kankaanpaa | Sep 1978 | |
4609435 | Tissari | Sep 1986 | |
4623429 | Tissari | Nov 1986 | |
4686004 | Fujiwara | Aug 1987 | |
4790909 | Harwood | Dec 1988 |
Number | Date | Country |
---|---|---|
3222428 | Dec 1983 | DEX |
1336713 | Nov 1973 | GBX |
Entry |
---|
"Zellstoff und Papier", 1979, Edition 4, p. 176. |