Number | Name | Date | Kind |
---|---|---|---|
843004 | Dock | Feb 1907 | |
3158391 | Carmi et al. | Nov 1964 | |
3172340 | Blenkle | Mar 1965 | |
3414302 | Priest | Dec 1968 | |
3501180 | Waara | Mar 1970 | |
3670630 | Tyson et al. | Jun 1972 | |
3857642 | Miller | Dec 1974 | |
5115725 | Horiuchi | May 1992 |
Entry |
---|
Parker-Hannifin Corporation Bulletin 1034, pp. 17-18, dated Sep., 1990, entitled "Cylinder Innovations." |