Document Type and Number:
Japanese Patent JPS52136642
Kind Code:
U
Application Number:
JP4507876U
Publication Date:
October 17, 1977
Filing Date:
April 13, 1976
Export Citation:
International Classes:
G01C1/00; F24S50/20; G01C15/00; G02B7/182; G02B17/00; (IPC1-7): G02B17/00; F24J3/02; G01C15/00