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| All Patents in class 475/159 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 252,537 | Jan. 17, 1882 | J. Stewart | Speed Gearing | ||
 | 1,385,283 | Jul. 19, 1921 | E.B. Smith, A.H. Loucks | Lubricator | |
| 2,141,209 | Dec. 27, 1938 | G.W. Emrick | Tapping attachment | ||
 | 2,295,299 | Sep. 08, 1942 | R.M. Shaw, Jr. | Power Transmission | |
 | 2,544,061 | Mar. 06, 1951 | E.T. Barnett | Speed change driving head for power-driven machine | |
| 3,448,828 | Jun. 10, 1969 | C.K. Goldberg | Drive speed control | ||