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Patents for Philip Schrag | |||||
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Picture | Number | Date | Patentee | Title | |
14,296 | Feb. 19, 1856 | W.J. von Kammerhueber, P. Schrag | Sawing Stone | ||
![]() | 45,679 | Dec. 27, 1864 | P. Schrag | Improvement in machines for sandpapering pencils | |
![]() | 103,241 | May 17, 1870 | P. Schrag, P. Hufeland | Improvement in machines for cutting off lead-pencils | |
![]() | RE5,236 | Jan. 14, 1873 | P. Schrag, P. Hufeland | Machine for cutting off pencils |