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| Patents for Marshalltown Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 954,681 | Apr. 12, 1910 | D. Lennox | Sheet-shearing machine | metal shearing machines | |
| 984,575 | Feb. 21, 1911 | D. Lennox | Rotary metal-shearing machine | metal shearing machines | |
| 1,020,508 | Mar. 19, 1912 | T. Lennox | Shearing Machine | metal shearing machines | |
| 1,636,267 | Jul. 19, 1927 | L. Williams | Combined rotary bevel shear and scrap cutter | metal shearing machines | |
| 1,651,654 | Dec. 06, 1927 | L. Williams | Shear machine | metal shearing machines | |