Document Type and Number:
Japanese Patent JPS4874536
Kind Code:
U
Application Number:
JP11988271U
Publication Date:
September 17, 1973
Filing Date:
December 18, 1971
Export Citation:
International Classes:
E01H5/09; B62B13/00; B62B19/00; E01H5/00; E01H8/06; (IPC1-7): E01H5/00; B62B13/00; E01H8/06
Domestic Patent References:
| JPS3012938Y1 |