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{{PatentInfo |Inventor=William A. Houston, Dillman Charles Houston |Assignee=William A. Houston, Dillman Charles Houston |ApplicationNum=151459 |ApplicationDate=1926-11-29 |PatentNum=1723171 |PatentDate=1929-08-06 |PriorityDate=1926-11-29 |Titolo=Fount...
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