Document Type and Number:
Japanese Patent JPS5642756
Kind Code:
U
Application Number:
JP12497179U
Publication Date:
April 18, 1981
Filing Date:
September 10, 1979
Export Citation:
International Classes:
F24J2/04; E04D13/00; E04D13/18; (IPC1-7): F24J3/02; E04D13/00