| US Patent: 2,289,081 
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| Hack saw blade | 
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| Patentees: |  
 | Leslie D. Hawkridge (exact or similar names) - Newton, MA |  | William H. Shortell (exact or similar names) - Greenfield, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 30, 1938 |  
| Granted: | Jul. 07, 1942 |  USPTO (New site tip)
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                        Joel Havens
 Randy Roeder's Millers Falls Co. site
 "Vintage Machinery" entry for Millers Falls Co.
 
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| Description: |  | This patent has no drawing. It covers the metallurgy of a hacksaw blade. |  |