| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Robert J. Pratt | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 384,928 | Jun. 19, 1888 | R.J. Pratt | Drill Chuck | metal lathe chucks | |
| 417,093 | Dec. 10, 1889 | J. Robison | Brush attachment for sawing-machines | metal sawing machines | |
| 1,106,301 | Aug. 04, 1914 | C.J. Hedemann | Sugar Cane Mill | sugar cane apparatus | |