| US Patent: 857,600 
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| Paper-Hanger's Tool Paper-Hanger's Plumb Level
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| Patentee: |  |
 | William U. Colthar (exact or similar names) - Springfield, OH |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 06, 1905 |  
| Granted: | Jun. 25, 1907 |  USPTO (New site tip)
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                        Ralph Brendler
 
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| Description: |  | This is a typical paper-hanger's straightedge, with the addition of a level to determine if the edge is plumb. The level vial could also be rotated, allowing the tool to be used as a really long level. |  |