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| Patents for Union Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 51,465 | Dec. 12, 1865 | J.P. Lindsay | Improved Wrench | |
 | 302,649 | Jul. 29, 1884 | J.W. Carleton | Reversible jaw for lathe-chucks | |
 | 1,219,083 | Mar. 13, 1917 | A.E. Church | Hydraulic chuck | |