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| Patents for Philo W. Hart | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 152,632 | Jun. 30, 1874 | P.W. Hart | Improvement in machines for sawing laths | |
 | 160,903 | Mar. 16, 1875 | P.W. Hart | Improvement in machines for sawing laths | |