| US Patent: 2,885,566 
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| Control means | 
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| Patentees: |  
 | Carl L. Sadler (exact or similar names) - Rockford, IL |  | George G. Hermanson (exact or similar names) - Rockford, IL |  | Robert H. Eisengrein (exact or similar names) - Rockford, IL |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Dec. 04, 1951 |  
| Granted: | May 05, 1959 |  USPTO (New site tip)
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                        Jeff Joslin
 
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