Document Type and Number:
Japanese Patent JPS5550137
Kind Code:
U
Application Number:
JP13169678U
Publication Date:
April 02, 1980
Filing Date:
September 27, 1978
Export Citation:
International Classes:
E01F1/00; (IPC1-7): E01F9/01; E01F9/10
Domestic Patent References:
| JPS474878U | 1972-09-13 | |||
| JPS30832Y1 |