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| Number | Title | Issue Date |
| 7409775 | Apparatus and method for determining feedscrew and barrel wear An apparatus and a method for determining wear of a feedscrew and barrel combination includes a measuring aperture formed in a wall of the barrel, a gage plug releasably retained in the measuring aperture and having an inner end curved to correspond to a curvature o... | 08/12/2008 |
| 7134316 | Apparatus and method for determining feedscrew and barrel wear An apparatus and a method for determining wear of a feedscrew and barrel combination includes a measuring aperture formed in a wall of the barrel, a gage plug releasably retained in the measuring aperture and having an inner end curved to correspond to a curvature o... | 11/14/2006 |
