| Patents for George T. Pritchard | 
| Patents 1 - 
					5
					of 5 
       | 
| Number | Date | Patentee | Title | Type | 
| 725,100 | Apr. 14, 1903 | W.F. Groene, R.K. Blond | Speed-changing mechanism | metal lathes | 
| 727,977 | May 12, 1903 | W.F. Groene, R.K. Blond | Speed-changing box | metal lathes | 
| 763,770 | Jun. 28, 1904 | W.F. Groene, R.K. Le Blond | Feed and Speed Changing Device for Machine-Tools | metal lathe mechanisms | 
| 763,912 | Jun. 28, 1904 | R.K. Blond, W.F. Groene | Feed and Speed Changing Device for Machine Tools | metal lathes | 
| 788,658 | May 02, 1905 | R.K. Le Blond | Speed Changing Device | metalworking speed changing mechanisms |