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| Patents for Charles F. Ritchel | |||||
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| Number | Date | Patentee | Title | Type | |
| 100,927 | Mar. 15, 1870 | C.F. Ritchel | Improvement in machines for preparing wood for inlaying | carving machines | |
| 121,074 | Nov. 21, 1871 | F.S. Allen, C.F. Ritchel | Improvement in boring-machines | drilling and boring | |
| 344,867 | Jul. 06, 1886 | C.F. Ritchel | Planing and matching machine | matchers | |
| 373,536 | Nov. 22, 1887 | C.F. Ritchel | Wave-edge matching machine | matchers | |