MANUFACTURE OF POROUS BOARD IN CONCRETE

Title:

MANUFACTURE OF POROUS BOARD IN CONCRETE

Document Type and Number:

Japanese Patent JPS5692008

Kind Code:

A

Inventors:

HAYASHI SHIGEO
HATAKEYAMA SHIGEYUKI
KAMISAKI YOSHIAKI

Application Number:

JP16941779A

Publication Date:

July 25, 1981

Filing Date:

December 27, 1979

Export Citation:

Assignee:

SHOWA DENKO KK

International Classes:

B28B1/48; B28B1/44; B28B7/30; B28B7/34; C04B41/63; C04B41/71; (IPC1-7): B28B1/44; B28B7/30; C04B41/32

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