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| Patents for Charles F. Mueller | |||||
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| Number | Date | Patentee | Title | Type | |
| 634,016 | Oct. 03, 1899 | C.F. Mueller | Tuning Hammer | musical instrument tools | |
| 680,497 | Aug. 13, 1901 | C.F. Mueller | Tool Handle | screwdriver handles | |
| 695,110 | Mar. 11, 1902 | C.F. Mueller | Bevel | bevels | |
| 828,895 | Aug. 21, 1906 | H.R. Braunsdorf, C.F. Mueller | Screw Driver and Other Hand Tool | screwdriver handles | |
| 1,376,721 | May 03, 1921 | C.F. Mueller | Screw Wrench | screw adjust wrenches | |