| US Patent: 170,392 
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| Improvement in corner-pieces and clamps for picture-frames | 
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| Patentee: |  |
 | Charles P. Poinier (exact or similar names) - Boston, MA |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | Jul. 24, 1875 |  
| Granted: | Nov. 23, 1875 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for George S. Bryant & Co.
 
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| Description: |  | "This invention has relation to improvements in corner ornaments and joint-binders for picture-frames, the object of which is to prevent the frame from being broken and its joints separated by a casual fall or other rough usage." |  |