| US Patent: 2,129,979 
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| Measuring Device | 
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| Patentees: |  
 | Carl Westervelt (exact or similar names) - Cadwell, NJ |  | George L. Storm (exact or similar names) - West Orange, NJ |  | Arthur Kaufmann (exact or similar names) - Essex Fells, NJ |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | May 08, 1936 |  
| Granted: | Sep. 13, 1938 |  USPTO (New site tip)
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                        Joel Havens
 
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