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| Patents for Matthew B. Siemers | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | D547,155 | Jul. 24, 2007 | S.T. Roger, M.B. Siemers | Spindle cutter | |
![]() | D563,190 | Mar. 04, 2008 | M.B. Siemers, T. R.Saunders, R.C. Lee | Pull shave | |