| US Patent: 2,442,444 
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| Boring head | 
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| Patentee: |  |
 | Herbert E. Tautz (exact or similar names) - Englewood, Arapahoe County, CO |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Sep. 10, 1945 |  
| Granted: | Jun. 01, 1948 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | This patent, to the founder of Delta Machinery Co., was invented after he had sold his business to Rockwell. |  |