Document Type and Number:
Japanese Patent JPS5673787
Kind Code:
U
Application Number:
JP15530279U
Publication Date:
June 17, 1981
Filing Date:
November 10, 1979
Export Citation:
International Classes:
E03C1/308; F04B33/00; (IPC1-7): E03C1/308; F04B33/00
Domestic Patent References:
| JPS426775Y1 | 1967-03-30 |