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{{PatentInfo |Inventor=Mahlon Edward Hirsch |Assignee=Louis Marx & Company |Country=US |ApplicationNum=140040 |ApplicationDate=1947-07-01 |PatentNum=D151989 |PatentDate=1948-12-07 |PriorityDate=1947-07-01 |Titolo=Design for a ball point fountain pen |M...
{{PatentInfo
|Inventor=Mahlon Edward Hirsch
|Assignee=Louis Marx & Company
|Country=US
|ApplicationNum=140040
|ApplicationDate=1947-07-01
|PatentNum=D151989
|PatentDate=1948-12-07
|PriorityDate=1947-07-01
|Titolo=Design for a ball point fountain pen
|Marca=Unbranded
|Descrizione=Penna a sfera
|Tipo=design
}}
==Informazioni==
Brevetto di design per una penna sfera. Riferimenti a {{MentionPatent|US|D130356}} e {{MentionPatent|US|D140151}}.
|Inventor=Mahlon Edward Hirsch
|Assignee=Louis Marx & Company
|Country=US
|ApplicationNum=140040
|ApplicationDate=1947-07-01
|PatentNum=D151989
|PatentDate=1948-12-07
|PriorityDate=1947-07-01
|Titolo=Design for a ball point fountain pen
|Marca=Unbranded
|Descrizione=Penna a sfera
|Tipo=design
}}
==Informazioni==
Brevetto di design per una penna sfera. Riferimenti a {{MentionPatent|US|D130356}} e {{MentionPatent|US|D140151}}.