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| Patents for Leslie S. Hubbert | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,755,353 | Apr. 22, 1930 | L.S. Hubbert | Filter Pot Press | liquid extracting machines | |
| 1,778,803 | Oct. 21, 1930 | L.S. Hubbert | Hydraulic Plastic Press | hydraulic presses | |
| 1,867,972 | Jul. 19, 1932 | L.S. Hubbert, C.J. Zube | Press for Manufacturing Molded Articles | hydraulic presses | |