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Patents for Henry Ihsen | |||||
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Picture | Number | Date | Patentee | Title | |
301,996 | Jul. 15, 1884 | H. Ihsen | Saw Gummer | ||
324,028 | Aug. 11, 1885 | H. Ihsen | Saw Gummer | ||
![]() | 374,363 | Dec. 06, 1887 | H. Ihsen | Wood-boring machine |