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| Patents for O. F. Barthel | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 522,672 | Jul. 10, 1894 | C. Puddefoot | Corkscrew | |
 | 524,889 | Aug. 21, 1894 | T. Craney | Chamfering-machine | |
 | 552,740 | Jan. 07, 1896 | W.L. Bedford | Wrench | |
| 562,217 | Jun. 16, 1896 | D. Crane | Gang-saw mill | ||
 | 564,625 | Jul. 28, 1896 | G.G. Kelsea | Wrench for Turning Spoke-Nipples | |
 | 569,597 | Oct. 20, 1896 | E.E. Anthony | Joist Drill | |
 | 570,237 | Oct. 27, 1896 | V. Spindler | Hose-carriage | |