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| Patents for Harrison Traver | |||||
| Number | Date | Patentee | Title | Type | |
| 330,759 | Nov. 17, 1885 | J. Weeks, H. Traver | Hydraulic jack | hydraulic jacks | |
| 330,760 | Nov. 17, 1885 | J. Weeks | Hydraulic jack | hydraulic jacks | |
| 334,206 | Jan. 12, 1886 | J. Weeks, H. Traver | Hydraulic jack | hydraulic jacks | |