Number | Date | Country | Kind |
---|---|---|---|
2450989 | Oct 1974 | DE | |
2523565 | May 1975 | DE |
Number | Name | Date | Kind |
---|---|---|---|
2543271 | Bambas | Feb 1951 | |
2680115 | Ruddy et al. | Jun 1954 | |
2723269 | Denton | Nov 1955 | |
2771469 | Schultz | Nov 1956 | |
3058987 | Albrecht et al. | Oct 1962 |
Entry |
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