Document Type and Number:
Japanese Patent JPS4938792
Kind Code:
A
Application Number:
JP8150972A
Publication Date:
April 11, 1974
Filing Date:
August 16, 1972
Export Citation:
International Classes:
E21D21/00; B65D81/32; E21D20/00
Domestic Patent References:
| JPS3418691Y1 |