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Patents for H. S. Tarr & Son | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 40,428 | Oct. 27, 1863 | W.H. Polleys, D.D. Polleys | Improvement in Plumb-Levels | |
![]() | 169,927 | Nov. 16, 1875 | H.S. Tarr | Improvement in plumb-levels |