| US Patent: D51,729 
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| Leaf Spring Lubricating Tool | 
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| Patentee: |  |
 | Charles W. Manzel (exact or similar names) - Buffalo, NY |  
 
| USPTO Classifications: |  | D8/75 |  
 
 
 
 
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| Patent Dates: |  
| Applied: | May 03, 1915 |  
| Granted: | Feb. 05, 1918 |  
 
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| Description: |  | Geyer & Popp - patent attorneys 
Example is marked: 
Charles W. Manzel 
Buffalo, NY
Pat. 2-5-18 |  |