Number | Date | Country | Kind |
---|---|---|---|
3405959 | Feb 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3551357 | Corte et al. | Dec 1970 | |
3751259 | Bauer et al. | Aug 1973 | |
3804631 | Faust | Apr 1974 | |
3862265 | Steinkamp et al. | Jan 1975 | |
3887450 | Gilano et al. | Jun 1975 | |
3953309 | Gilano et al. | Apr 1976 | |
4252880 | Lind et al. | Feb 1981 |
Number | Date | Country |
---|---|---|
0049504 | Mar 1981 | EPX |
1117391 | Mar 1959 | DEX |
2718047 | Mar 1979 | DEX |
1521322 | Aug 1978 | GBX |
Entry |
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Abstract, U.S. Pat. No. 2,539,377. |