| US Patent: 5,909,930 
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| Retractable blade utility knife having quick change feature | 
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| Patentees: |  
 | Howard Nicholas Ragland, III (exact or similar names) - Cincinnati, OH |  | James Felix Mariol (exact or similar names) - Cincinnati, OH |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 05, 1997 |  
| Granted: | Jun. 08, 1999 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for Millers Falls Co.
 Randy Roeder's Millers Falls Co. site
 
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