Document Type and Number:
Japanese Patent JPS5517199
Kind Code:
B2
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JPS5833068 | [Title of the Invention] Air concrete play car |
Application Number:
JP4817175A
Publication Date:
May 09, 1980
Filing Date:
April 22, 1975
Export Citation:
International Classes:
E21B1/12; E21B1/00; E21B6/08