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| All Patents in class 164/332 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 145,537 | Dec. 16, 1873 | C. Stewart | Improvement in Mallets for Driving Tubes, &c. | |
 | 875,448 | Dec. 31, 1907 | R. Milne | Core and casting | |
 | 1,095,866 | May 05, 1914 | J. Horat | Combined Ladle and Mold for Soft Metal Hammers | |
| 2,074,296 | Mar. 16, 1937 | H.B. Allen | Apparatus for Making Composite Metals | ||