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Riga 13: Riga 13:  
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==Informazioni==
 
==Informazioni==
Brevetto per una penna a stilo. Riferimenti a {{MentionPatent|DE|689598}}, {{MentionPatent|DE|716752}}, {{MentionPatent|DE|738888}}, {{MentionPatent|DE|744671}}, {{MentionPatent|FR|946434}}, {{MentionPatent|FR|990094}}, {{MentionPatent|GB|657351}}, {{MentionPatent|US|2217502}}, {{MentionPatent|US|2472343}}, {{MentionPatent|US|2495179}}, {{MentionPatent|US|2595097}}.
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Brevetto per una penna a stilo. Riferimenti a {{MentionPatent|DE|689598}}, {{MentionPatent|DE|716752}}, {{MentionPatent|DE|738888}}, {{MentionPatent|DE|744671}}, {{MentionPatent|FR|946434}}, {{MentionPatent|FR|990094}}, {{MentionPatent|GB|657351}}, {{MentionPatent|US|2217502}}, {{MentionPatent|US|2472343}}, {{MentionPatent|US|2495179}}, {{MentionPatent|US|2595097}}. {{SamePatent|US|2805645}} {{SamePatent|FR|1094189}} {{SamePatent|BG|749290}} {{SamePatent|CA|556148}}