− | Brevetto del caricamento [[Touchdown]]. Riferimento a {{MentionPatent|US|1134936}}, {{MentionPatent|US|1607048}}, {{MentionPatent|US|1801635}}, {{MentionPatent|US|2139045}} e {{MentionPatent|US|2432061}}. | + | Brevetto del caricamento [[Touchdown]]. Riferimenti a {{MentionPatent|US|1134936}}, {{MentionPatent|US|1607048}}, {{MentionPatent|US|1801635}}, {{MentionPatent|US|2139045}} e {{MentionPatent|US|2432061}} ed anche {{MentionPatent|GB|154714}}, {{MentionPatent|GB|291353}} e {{MentionPatent|FR|822691}}. |