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Patents for Edward E. Longan | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 470,626 | Mar. 08, 1892 | W.J. Walker | Wrench | |
![]() | 609,567 | Aug. 23, 1898 | J. Yerkes | Dowel-hole-boring machine | |
706,798 | Aug. 12, 1902 | P.E. Chapman | Electric testing apparatus |