Revision history of "File:Patent-GB-475970.pdf"

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Facts about "Patent-GB-475970.pdf"
Application dateJune 6, 1936 +
Application number15921/36 +
Assigned toMentmore Manufacturing Company Limited +
Invented byWilliam F. Johnson +
Patent dateNovember 30, 1937 +
Patent descriptionSistema di caricamento +
Patent number475970 +
Patent titleImprovements in or relating to self-filling fountain pens +
Patented byMentmore +
Patented inGB +
Priority dateJune 6, 1936 +
Same invention ofFile:Patent-FR-822628.pdf +, File:Patent-US-2123110.pdf + and File:Patent-CA-382339.pdf +