Number | Name | Date | Kind |
---|---|---|---|
3398444 | Nemy | Aug 1968 | |
4154628 | Dudek et al. | May 1979 | |
4173501 | Hildebrandt et al. | Nov 1979 | |
4629518 | Larsen | Dec 1986 | |
4711676 | Kitamori et al. | Dec 1987 | |
4771689 | Arzoumanian et al. | Sep 1988 |
Entry |
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"Machinery's Encyclopedia", vol. II, E. Oberg and F. D. Jones, The Industrial Press, New York (1917) pp. 2-20. |