| US Patent: 481,230 
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| Nut and Bolt Wrench | 
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| Patentee: |  |
 | John Hoval (exact or similar names) - Stafford, TX |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Feb. 09, 1892 |  
| Granted: | Aug. 23, 1892 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | John Hoval patent August 23, 1892 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The rack teeth on the movable jaw do not extend to the end of the base so the movable jaw cannot fall out. The movable jaw includes a socket for a screwdriver bit; the screwdriver is a major facet of the patent. |  |