Number | Date | Country | Kind |
---|---|---|---|
3004129 | Feb 1980 | DEX | |
3039207 | Oct 1980 | DEX | |
3100807 | Jan 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2281014 | Winnek | Apr 1942 | |
2993884 | Ruegg et al. | Jul 1961 | |
4247631 | Nix et al. | Jan 1981 |
Entry |
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