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| Patents for P. O'Donnell | |||||
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| Number | Date | Patentee | Title | Type | |
| 164,453 | Jun. 15, 1875 | I.W. Heysinger | Improvements in Slide-Wrenches | nut wrenches | |
| RE9,803 | Jul. 12, 1881 | H.R. Heyl | Device for inserting metallic staples | staplers | |
| 275,042 | Apr. 03, 1883 | I.W. Heysinger | Suspension Wrench For Gas and Other Cocks | wrenches | |
| 286,610 | Oct. 16, 1883 | I.W. Heysinger | Bit-brace and washer cutter | braces | |