| Patents for Leo  O'Donnell | 
| Patents 1 - 
					10
					of 10 
       | 
| Number | Date | Patentee | Title | Type | 
| 764,109 | Jul. 05, 1904 | N.D. Chard | Automatic stop for lathe-carriages | metal lathes | 
| 764,609 | Jul. 12, 1904 | W. Lodge | Boring Tool | lathe tools | 
| 766,488 | Aug. 02, 1904 | J.H. Blair | Turret Attachment for Lathe Carriages | metal lathe accessories and attachments | 
| 767,387 | Aug. 16, 1904 | N.D. Chard | Wheel Rim Finishing Machine | metal lathes | 
| 773,196 | Oct. 25, 1904 | N.D. Chard | Diameter Gage for Lathes | metalworking machine mechanisms | 
| 780,704 | Jan. 24, 1905 | N.D. Chard | Gearing for Headstocks for Lathes | metalworking machine mechanisms | 
| 790,872 | May 23, 1905 | N.D. Chard | Lathe-Apron | metal lathes | 
| 818,632 | Apr. 24, 1906 | C.F. Laur | Variable Speed Mechanism | metalworking speed changing mechanisms | 
| 890,333 | Jun. 09, 1908 | N.D. Chard, M. Shipley | Variable-speed mechanism | metalworking variable speed mechanisms | 
| 890,334 | Jun. 09, 1908 | N.D. Chard, M. Shipley | Variable-speed mechanism | metalworking variable speed mechanisms |