Number | Date | Country | Kind |
---|---|---|---|
7-201625 | Jul 1995 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2920650 | Moog | Jan 1960 | |
3370613 | Weaver | Feb 1968 | |
3472281 | Chiba et al. | Oct 1969 | |
3581772 | Wills | Jun 1971 | |
3712339 | Bartholomaus et al. | Jan 1973 | |
3814131 | Takahashi et al. | Jun 1974 | |
3857541 | Clark | Dec 1974 | |
4840111 | Garnjost | Jun 1989 | |
5186213 | Urata et al. | Feb 1993 |
Entry |
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John F. Blackburn, et al. "Fluid Power Control", Published jointly by The Technology Press of M.I.T. and John Wiley & Sons, Inc. (pp. 185, 189, 208-209, 250-251, 263-264), 1960. |