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Patents for A. M. Dorr | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 966,105 | Aug. 02, 1910 | J.P. Lavigne | Automatic die-head | |
1,016,569 | Feb. 06, 1912 | J.P. Lavigne | Lubricator | ||
![]() | 1,087,555 | Feb. 17, 1914 | J. Sand, J. Sand, Jr. | Level |