US Patent: 387,409 
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| Screwdriver
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| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
         |  
| Applied: | 
Dec. 14, 1885 | 
 
| Granted: | 
Aug. 07, 1888 | 
 
 
 
USPTO (New site tip) Google Patents 
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                        Steve Gosselin 
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        Description: |  
| Round bodied screwdriver blade with the end contained within the handle reduced to a cross shaped cross section to secure the blade in the handle. |  
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