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| Patents for Gilliam Mfg. Co. | |||||
| Number | Date | Patentee | Title | Type | |
| 1,031,995 | Jul. 09, 1912 | W.H. Gelbaugh | Metal Butt Gage | butt gauges | |
| 1,491,613 | Apr. 22, 1924 | G.L. Miller | Apparatus for Gauging Taper Pieces | special purpose gauges | |