Document Type and Number:
Japanese Patent JPS4936217
Kind Code:
A
Application Number:
JP7797772A
Publication Date:
April 04, 1974
Filing Date:
August 03, 1972
Export Citation:
International Classes:
H04H20/76; H04H20/78; H04H60/15; H04H60/31; H04N7/14; H04N7/173; H04H9/00; (IPC1-7): H04H1/02