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Patents for Richard H. Dudgeon | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 297,975 | May 06, 1884 | R.H. Dudgeon | Hydraulic jack | |
![]() | RE10,865 | Sep. 13, 1887 | R.H. Dudgeon | Hydraulic jack | |
![]() | 478,530 | Jul. 05, 1892 | J. Weeks | Horizontal hydraulic jack |