Title:
色そろばん
Document Type and Number:
Japanese Patent JP3179562
Kind Code:
U
Inventors:
Watanabe Kei
Application Number:
JP2012005416U
Publication Date:
November 08, 2012
Filing Date:
August 18, 2012
Export Citation:
Assignee:
Watanabe Kei
International Classes:
G06C1/00; G09B19/02