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| Patents for Knapp Dovetailing-Machine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 63,532 | Apr. 02, 1867 | C.B. Knapp | Improvement in boring machines | |
 | D4,302 | Aug. 23, 1870 | C.B. Knapp | Design for joining wood | |
 | 122,390 | Jan. 02, 1872 | N.S. Clement, C.B. Knapp | Improvement in machines for dovetailing | |
 | 388,760 | Aug. 28, 1888 | N.S. Clement | Dovetailing-machine | |