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| Patents for John R. Johnson | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,139,422 | May 11, 1915 | J.R. Johnson | Milling-Machine | ||
| 1,143,584 | Jun. 15, 1915 | J.R. Johnson | Milling-Machine | ||
| 1,143,585 | Jun. 15, 1915 | J.R. Johnson | Milling-Machine Spindle-Head | ||
| 1,153,165 | Sep. 07, 1915 | J.R. Johnson | Milling-Machine | ||
 | 1,254,044 | Jan. 22, 1918 | J.R. Johnson | Work-support | |
| 2,012,047 | Aug. 20, 1935 | J.R. Johnson | Boring Head | ||