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| Patents for H. A. Landwehr | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,098,629 | Jun. 02, 1914 | P.J. Joecken | Feed device for planers and the like | woodworking machine stockfeeding mechanisms | |
| 1,248,748 | Dec. 04, 1917 | A.G. Stuedeman | Chain-feed rip-saw machine | circular ripsaws | |