Title:
【考案の名称】寒冷地用逆流防止弁
Document Type and Number:
Japanese Patent JPS59113567
Kind Code:
U
Inventors:
Koizumi Norio
Application Number:
JP773483U
Publication Date:
July 31, 1984
Filing Date:
January 21, 1983
Export Citation:
International Classes:
F16T1/34; E03B7/10; F16K15/06; (IPC1-7): F16K15/06; F16T1/34