【発明の名称】公衆電話機故障表示装置 - Nippon Telegraph and Telephone Corporation

Title:

【発明の名称】公衆電話機故障表示装置

Document Type and Number:

Japanese Patent JP2673750

Kind Code:

B2

More Like This:

JPS63202167	SYSTEM FOR MONITORING KEYBOARD INPUT INFORMATION
WO/2005/057893	ADAPTER FOR SECURE VOIP COMMUNICATIONS
WO/2009/098538	SYSTEM AND METHOD FOR ENHANCING SECURITY FOR A MOBILE ELECTRONIC DEVICE OPERATED BY A CHILD

Inventors:

Satoshi Yamazaki
Yu Sanuki
Hideaki Kuwahara
Keiji Watanabe

Application Number:

JP8622591A

Publication Date:

November 05, 1997

Filing Date:

March 26, 1991

Export Citation:

Assignee:

Nippon Telegraph and Telephone Corporation

International Classes:

H04M3/22; H04M17/00; (IPC1-7): H04M17/00; H04M3/22

Domestic Patent References:

Attorney, Agent or Firm:

Shinnosuke Tsunoda

Previous Patent: 温度応動弁

Next Patent: 多機能電話装置