| US Patent: 3,197,841 
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| Replaceably Mounted Insert | 
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| Patentees: |  
 | Horace A. Frommelt (exact or similar names) - Philadelphia, PA |  | Robert E. Watling (exact or similar names) - Salem, Washington County, IN |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Oct. 05, 1960 |  
| Granted: | Aug. 03, 1965 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Original application filed 05 Oct., 1960. Divided and this application filed 09 Sept., 1963. |  |