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| Patents for Oster Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,655,072 | Jan. 03, 1928 | G.D. Sleeth, H.W. Oster | Diestock | taps and dies | |
| 1,669,911 | May 15, 1928 | G.D. Sleeth, H.W. Oster | Machine for cutting off pipes and the like | pipe cutting machines | |
| 1,707,478 | Apr. 02, 1929 | R.E. Hyde | Grooving Tool | grooving tools | |
| 1,789,411 | Jan. 20, 1931 | G.D. Sleeth, H.W. Oster | Portable power-driven threading tool | handheld power tools | |
| 1,789,412 | Jan. 20, 1931 | G.D. Sleeth, H.W. Oster | Portable power-driven tool | handheld power tools | |