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Facts about "Patent-GB-621822.pdf"
Application dateNovember 13, 1946 +
Application number33676/46 +
Assigned toMabie, Todd & Company Limited +
Invented byLeslie William Johnson + and Edward Stephen Sears +
Patent dateApril 20, 1949 +
Patent descriptionPenna a sfera +
Patent number621822 +
Patent titleImprovements in or relating to fountain pens +
Patented bySwan +
Patented inGB +
Priority dateNovember 13, 1946 +