Document Type and Number:
Japanese Patent JPS5731400
Kind Code:
U
More Like This:
Application Number:
JP10553480U
Publication Date:
February 18, 1982
Filing Date:
July 25, 1980
Export Citation:
International Classes:
E21D11/38; E21D11/18; (IPC1-7): E21D11/18; E21D11/38
Domestic Patent References:
| JP54008835B |