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| All Patents in class 475/343 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 19,769 | Mar. 30, 1858 | J. Grant | Horse Power | |
 | 25,497 | Sep. 20, 1859 | L.R. Faught | Horse-power machine | |
 | 1,789,412 | Jan. 20, 1931 | G.D. Sleeth, H.W. Oster | Portable power-driven tool | |
 | 2,295,299 | Sep. 08, 1942 | R.M. Shaw, Jr. | Power Transmission | |
| 3,037,429 | Jun. 05, 1962 | G.H. Schurger | Right Angle Milling Attachment | ||
| 3,316,772 | May 02, 1967 | G.H. Jones | Multiple Pinion Wound Up Power Drive | ||