Piccardi
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Piccardi
{{PatentInfo |Inventor=William F. Johnson |Assignee=Mentmore Manufacturing Company Limited |Country=GB |ApplicationNum=15921/36 |ApplicationDate=1936-06-06 |PatentNum=475970 |PatentDate=1937-11-30 |PriorityDate=1936-06-06 |Titolo=Improvements in or rel...
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