Document Type and Number:
Japanese Patent JPS50113231
Kind Code:
U
Application Number:
JP2133174U
Publication Date:
September 16, 1975
Filing Date:
February 23, 1974
Export Citation:
International Classes:
E04B1/84; E01B19/00; E01D1/00; E01D2/00; E01D19/00; E04B1/82; E04B1/98; E01D101/30; E01D101/40; (IPC1-7): E01D19/00; E04B1/82
Domestic Patent References:
| JPS521578A | 1977-01-07 |