Title:
【考案の名称】集合住宅用インターホン装置
Document Type and Number:
Japanese Patent JP2593722
Kind Code:
Y2
Inventors:
Hiroyuki Tsunekawa
Application Number:
JP6579191U
Publication Date:
April 12, 1999
Filing Date:
August 20, 1991
Export Citation:
Assignee:
Aiphone Co., Ltd.
International Classes:
H04N5/225; H04M1/02; H04N7/18; (IPC1-7): H04N7/18
Domestic Patent References:
| JP6068945A | ||||
| JP316781U |
Attorney, Agent or Firm:
Moriya Kazuo