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| Patents for M. H. Slifer | |||||
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| Number | Date | Patentee | Title | Type | |
| D49,186 | Jun. 13, 1916 | H. Klimitchek | Design For Combination Tools | wrench combination tools | |
| D50,381 | Feb. 27, 1917 | G.W. Funk | Combination Tool | combination tools | |
| 1,254,597 | Jan. 22, 1918 | E.N. Hussey | Saw Clamp | saw vises | |
| 1,258,582 | Mar. 05, 1918 | E.C. McGuffey | Ratchet Wrench | ratchet wrenches | |
| 1,272,289 | Jul. 09, 1918 | E. Massey | Sawmill Set Works | sawmill set works | |