Number | Date | Country | Kind |
---|---|---|---|
4030570 | Sep 1990 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2566381 | Svenson | Sep 1951 | |
3321909 | Gordon | May 1967 | |
3375760 | Taplin | Apr 1968 | |
4458791 | Schneider et al. | Jul 1984 | |
5096400 | Budecker et al. | Mar 1992 |
Number | Date | Country |
---|---|---|
2324059 | Nov 1974 | DEX |
108004 | Aug 1979 | JPX |
2036873 | Jul 1980 | GBX |
Entry |
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Ruckblick auf die Deutsche Industriemesse Hannover 1960, Dr. Ing A. Welte, pp. 375-388, Dec. 1060. |