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Facts about "Patent-US-1918239.pdf"
Application dateDecember 24, 1931 +
Application number228943 +
Assigned toThe Esterbrook Steel Pen Manfacturing Co. +
Invented byLeon H. Ashmore +
Patent dateJuly 18, 1933 +
Patent descriptionPennino intercambiabile +
Patent number1918239 +
Patent titleFountain pen +
Patented byEsterbrook +
Patented inUS +
Priority dateDecember 24, 1931 +
Used for featurePennino +