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| Patents for Thomas R. Renwick | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,742,217 | Jan. 07, 1930 | T.R. Renwick | Woodworking shaper | wood shapers | |
| 1,748,325 | Feb. 25, 1930 | M.D. Baldwin, T.R. Renwick, A.S. Kurkjian | Mortising machine | mortising machines | |