Document Type and Number:
Japanese Patent JPS4731757
Kind Code:
U
Application Number:
JP3430071U
Publication Date:
December 09, 1972
Filing Date:
April 30, 1971
Export Citation:
International Classes:
A44C5/14; G04B37/14; G04B37/16; (IPC1-7): G04B37/14; A44C5/14