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{{PatentInfo |Inventor=Craig R. Sheaffer |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=319031 |ApplicationDate=1952-11-06 |PatentNum=2784699 |PatentDate=1959-03-12 |PriorityDate=1952-11-06 |Titolo=Writing implements |Marca=Sheaffer |...
{{PatentInfo
|Inventor=Craig R. Sheaffer
|Assignee=W. A. Sheaffer Pen Company
|Country=US
|ApplicationNum=319031
|ApplicationDate=1952-11-06
|PatentNum=2784699
|PatentDate=1959-03-12
|PriorityDate=1952-11-06
|Titolo=Writing implements
|Marca=Sheaffer
|Descrizione=Meccanismo dello ''[[snorkel]]''
}}
==Informazioni==
Brevetto per il meccanismo dello ''[[snorkel]]''. Riferimenti a {{MentionPatent|US|2462929}}, {{MentionPatent|US|2522554}}, {{MentionPatent|US|2648309}}, e {{MentionPatent|US|2670711}}.

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