METHOD OF MAKING INTERNAL MOLDING FRAME FOR HOLLOW SPHERICAL AND POLYHEDRAL BLOCKS HAVING MUTIPLE HOLES* METHOD OF MAKING SAME BLOCK

Title:

METHOD OF MAKING INTERNAL MOLDING FRAME FOR HOLLOW SPHERICAL AND POLYHEDRAL BLOCKS HAVING MUTIPLE HOLES* METHOD OF MAKING SAME BLOCK

Document Type and Number:

Japanese Patent JPS53146721

Kind Code:

A

Inventors:

ISHIKURA KENJI

Application Number:

JP4931777A

Publication Date:

December 20, 1978

Filing Date:

April 27, 1977

Export Citation:

Assignee:

ISHIKURA KENJI

International Classes:

B28B1/00; B28B1/44; B28B7/00; B28B7/28; (IPC1-7): B28B1/44; B28B7/00

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