Number | Date | Country | Kind |
---|---|---|---|
5456/81 | Dec 1981 | DKX |
Number | Name | Date | Kind |
---|---|---|---|
2610739 | Bitzer | Sep 1952 | |
3762537 | Lutz | Oct 1973 | |
3764062 | Brautigam | Oct 1973 | |
3977515 | Lewoczko | Aug 1976 | |
4328925 | Shapiro | May 1982 | |
4429770 | Weisbrod | Feb 1984 |
Number | Date | Country |
---|---|---|
2556671 | Jul 1976 | DEX |
2729057 | Jan 1979 | DEX |
2924047 | Jan 1981 | DEX |
149912 | Nov 1981 | JPX |
Entry |
---|
PCT Pamphlet WO 81/02853. |