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Patents for E. W. Boyles | |||||
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Picture | Number | Date | Patentee | Title | |
863,037 | Aug. 13, 1907 | S.J. Morgan, H.M. Whitcomb | Hot-air register | ||
![]() | 953,634 | Mar. 29, 1910 | S.J. Morgan | Friction speed-changing mechanism |