Number | Date | Country | Kind |
---|---|---|---|
2815539 | Apr 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2616887 | Danzig et al. | Nov 1952 | |
2920081 | Privette | Jan 1960 | |
3317593 | Enk et al. | May 1967 | |
3639472 | Sennewald et al. | Feb 1972 | |
3780194 | Acton et al. | Dec 1973 | |
3899539 | Fernholz et al. | Aug 1975 |
Number | Date | Country |
---|---|---|
2062950 | Jul 1970 | DEX |
2417658 | Oct 1975 | DEX |
1494430 | Dec 1977 | GBX |
Entry |
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