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{{PatentInfo |Inventor=John C. Wahl |Assignee=Eversharp Inc. |Country=US |ApplicationNum=558144 |ApplicationDate=1944-10-11 |PatentNum=2427033 |PatentDate=1947-09-09 |PriorityDate=1944-09-11 |Titolo=Mechanical ink pencil |Marca=Eversharp |Descrizione=P...
{{PatentInfo
|Inventor=John C. Wahl
|Assignee=Eversharp Inc.
|Country=US
|ApplicationNum=558144
|ApplicationDate=1944-10-11
|PatentNum=2427033
|PatentDate=1947-09-09
|PriorityDate=1944-09-11
|Titolo=Mechanical ink pencil
|Marca=Eversharp
|Descrizione=Penna a sfera
}}
==Informazioni==
Brevetto per una penna a sfera. Riferimenti a {{MentionApplication|1944-09-11|553515}}; {{MentionPatent|US|1179086}}, {{MentionPatent|US|1327729}}, {{MentionPatent|US|1493680}} e {{MentionPatent|US|1527971}}.
|Inventor=John C. Wahl
|Assignee=Eversharp Inc.
|Country=US
|ApplicationNum=558144
|ApplicationDate=1944-10-11
|PatentNum=2427033
|PatentDate=1947-09-09
|PriorityDate=1944-09-11
|Titolo=Mechanical ink pencil
|Marca=Eversharp
|Descrizione=Penna a sfera
}}
==Informazioni==
Brevetto per una penna a sfera. Riferimenti a {{MentionApplication|1944-09-11|553515}}; {{MentionPatent|US|1179086}}, {{MentionPatent|US|1327729}}, {{MentionPatent|US|1493680}} e {{MentionPatent|US|1527971}}.