Membership
Tour
Register
Log in
Sozo Ishiyama
Follow
Person
Chiba, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Block toy including a plurality of blocks that can be variously ass...
Patent number
5,354,224
Issue date
Oct 11, 1994
Kabushiki Kaisha Gakushu Kenkyusha
Sozo Ishiyama
A63 - SPORTS GAMES AMUSEMENTS