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|Assignee=Maud C. Riesenberg
 
|Assignee=Maud C. Riesenberg
 
|Country=US
 
|Country=US
|ApplicationNum=64055
+
|ApplicationNum=106163
 
|ApplicationDate=1916-06-27
 
|ApplicationDate=1916-06-27
|PatentNum=1251421
+
|PatentNum=1249501
 
|PatentDate=1917-12-11
 
|PatentDate=1917-12-11
 
|PriorityDate=1916-06-27
 
|PriorityDate=1916-06-27