| Patents for John Parker |
Patents 16 -
30
of 34
      |
| Number | Date | Patentee | Title | Type |
| 642,711 | Feb. 06, 1900 | J. Parker | Milling Machine | milling machines |
| 642,712 | Feb. 06, 1900 | J. Parker | High Speed Attachment for Milling Machines | milling machine accessories |
| 682,227 | Sep. 10, 1901 | J. Parker | Variable-Speed Mechanism | |
| 718,514 | Jan. 13, 1903 | J. Parker | Feed-tripping mechanism | milling machines |
| 750,485 | Jan. 26, 1904 | J. Parker | Gear Cutting Machine | gear making machines |
| 754,339 | Mar. 08, 1904 | J. Parker | Variable-Speed Mechanism | |
| 794,464 | Jul. 11, 1905 | J. Parker | Variable-speed mechanism | milling machines |
| 806,910 | Dec. 12, 1905 | J. Parker | Milling-machine | milling machines |
| 825,409 | Jul. 10, 1906 | J. Parker | Vertical Spindle Attachment | |
| 846,505 | Mar. 12, 1907 | J. Parker | Gear-Cutting Machine | |
| 851,831 | Apr. 30, 1907 | J. Parker | Index Head | indexers and dividers |
| 855,068 | May 28, 1907 | J. Parker | Gearing | milling machines |
| 963,935 | Jul. 12, 1910 | J. Parker | Cutter-holding device for milling-machines | milling machines |
| 1,032,698 | Jul. 16, 1912 | J. Parker | Means of manually rotating a machine spindle | metalworking machine mechanisms |
| 1,170,097 | Feb. 01, 1916 | J. Parker | Speed changing and reversing mechanism | metalworking machine mechanisms |
