Document Type and Number:
Japanese Patent JPS5123768
Kind Code:
A
Inventors:
EGAWA MASARU
YAMADA AKIO
YAMADA AKIO
Application Number:
JP9074174A
Publication Date:
February 25, 1976
Filing Date:
August 09, 1974
Export Citation:
Assignee:
SUWA SEIKOSHA KK
International Classes:
C03C17/09; C03C17/245; G03B31/00; G04B39/00; (IPC1-7): G03B31/00; G04B39/00