Number | Date | Country | Kind |
---|---|---|---|
78554 | Nov 1977 | LUX |
Number | Name | Date | Kind |
---|---|---|---|
1932595 | Muth et al. | Oct 1933 | |
3405184 | Widiger, Jr. et al. | Oct 1968 | |
3471576 | Klesper et al. | Oct 1969 | |
3506720 | Model et al. | Apr 1970 | |
3652665 | Shen et al. | Mar 1972 | |
3753914 | Berth et al. | Aug 1973 | |
3904696 | Model et al. | Sep 1975 |
Number | Date | Country |
---|---|---|
628792 | Apr 1936 | DE2 |
1930256 | Dec 1970 | DEX |
2142686 | Mar 1973 | DEX |
2439340 | Feb 1976 | DEX |
2619489 | Nov 1976 | DEX |
148291 | Jul 1931 | CHX |
Entry |
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