| US Patent: 2,507,581 
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| Safety Device for Broaching Machines | 
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| Patentees: |  
 | Milton V. Waters (exact or similar names) - Silverton, Hamilton County, OH |  | William P. McDonald (exact or similar names) - Cincinnati, Hamilton County, OH |  | Harold P. Baecker (exact or similar names) - Milford, Hamilton County, OH |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Feb. 26, 1945 |  
| Granted: | May 16, 1950 |  USPTO (New site tip)
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                        Joel Havens
 "Vintage Machinery" entry for Cincinnati Milling Machine Co.
 
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