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| Patents for John Ritchie | |||||
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| Number | Date | Patentee | Title | Type | |
| XC-127 | Jun. 19, 1848 | J. Ritchie | Method of constructing saw mills for slabbing logs and sawing slabs | sawmills | |
| XC-1,796 | Feb. 15, 1865 | J. Ritchie | Machine for holding saw logs, to be called "Ritchie's patent attached sawmill chairs" | sawmill dogs | |
| 303,666 | Aug. 19, 1884 | F.W. Ritchie | Combination tool | ||