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{{PatentInfo
 
{{PatentInfo
 
|Inventor=Herbert L. Carman
 
|Inventor=Herbert L. Carman
|Assignee=Mabie, Todd & Company
+
|Assignee=Herbert L. Carman
 
|Country=US
 
|Country=US
|ApplicationNum=392324
+
|ApplicationNum=269319
|ApplicationDate=1920-06-28
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|ApplicationDate=1919-01-02
 
|PatentNum=1304739
 
|PatentNum=1304739
 
|PatentDate=1919-05-27
 
|PatentDate=1919-05-27
|PriorityDate=1920-06-28
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|PriorityDate=1919-01-02
 
|Titolo=Self-filling fountain-pen
 
|Titolo=Self-filling fountain-pen
 
|Marca=Swan
 
|Marca=Swan