US Patent: 3,268,979 
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| Cutting tool
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	        Patentees:
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 | James W. Stewart (exact or similar names) - Detroit, MI |  
| Orval A. Opperthauser (exact or similar names) - Bloomfield Township, MI |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Apr. 03, 1964 | 
 
| Granted: | 
Aug. 30, 1966 | 
 
 
 
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                        Jeff Joslin Vintage Machinery entry for F. Joseph Lamb Co. 
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        Description: |  
| The cutter is a segment of a circle; the holder can be adjusted to position the cutter radially, axially and circumferentially. |  
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