| US Patent: 102,400 
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| Improvement in detachable saw-teeth | 
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| Patentee: |  |
 | Patrick J. Hogan (exact or similar names) - Cincinnati, OH |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Apr. 26, 1870 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | From the 1870 Williams' Cincinnati Directory: "Hogan Patrick (Ritter, H. & Sowden) h. 519 W. 3d". We know that our Patrick Hogan was involved in some way with Adam Sowden, who was co-inventor on an 1874 patent. There are corresponding listings for John T. Ritter and A. Sowden. The business was located at 213 W. 2d. From the 1878 Williams' Cincinnati Directory: "Hogan P. J., Manufacturer of Patent Ground Saws, Hogan's Patent Saw Gummer and Hogan's Patent Cross-Cut Saw Handle, 213 W. 2d; Residence, 327 W. 3d." |  |