US Patent: 2,443,880 
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| Dial Gauge for Measuring Small Bores
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	        Patentees:
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 | Erik Henry Aldeborgh (exact or similar names) - Poughkeepsie, NY |  
| Alfred Hamilton Emery (exact or similar names) - Wappingers Falls, NY |  
| John J. Bishop (exact or similar names) - Poughkeepsie, NY |  
| Earl M. Boat (exact or similar names) - Poughkeepsie, NY |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Apr. 05, 1946 | 
 
| Granted: | 
Jun. 22, 1948 | 
 
 
 
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                        Joel Havens 
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