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| Patents for St. Paul Machinery Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,018,763 | Oct. 29, 1935 | J.N. Kirby | Wood carving machine | carving machines | |
| 2,342,473 | Feb. 22, 1944 | J.N. Kirby, E.W. Grumke | Carving machine structure | carving machines | |