Title:
【考案の名称】インタ-ホン装置
Document Type and Number:
Japanese Patent JPS59168708
Kind Code:
U
Inventors:
Yoshihisa Omiya
Application Number:
JP6458883U
Publication Date:
November 12, 1984
Filing Date:
April 27, 1983
Export Citation:
International Classes:
G02B6/00; G02B6/04; H04M9/00; (IPC1-7): G02B5/17; G02B5/14; H04M9/00