Number | Name | Date | Kind |
---|---|---|---|
3653409 | Brannon | Apr 1972 | A |
3875849 | Patel | Apr 1975 | A |
4011891 | Knutson et al. | Mar 1977 | A |
4290447 | Knutson | Sep 1981 | A |
4569273 | Anderson et al. | Feb 1986 | A |
5715865 | Wilke | Feb 1998 | A |
5921279 | Barber | Jul 1999 | A |
Entry |
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Jack L. Johnson, PE, “Design of Electrohydraulic Systems For Industrial Motion Control,” 1991, pp. 4-15 & 4-16. |