US Patent: 1,142,054 
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| Valve-controller
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	        Patentee:
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 | De Witt Clinton Prescott (exact or similar names) - Chicago, IL |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Mar. 13, 1913 | 
 
| Granted: | 
Jun. 08, 1915 | 
 
 
 
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                        Jeff Joslin Vintage Machinery entry for Prescott Co. 
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        Description: |  
| A full-page ad features the Prescott's Valve Controller with this patent date. The ad was in the 1918-01-01 Canada Lumberman and is from the Wm. Hamilton Co., Ltd. |  
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