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Patents for Leroy R. Loughborough | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 844,157 | Feb. 12, 1907 | L.R. Loughborough | Drafting Instrument | |
![]() | 893,085 | Jul. 14, 1908 | L.R. Loughborough | Drafting Instrument |