Title:
通信システムの一斉指令受令確認方式
Document Type and Number:
Japanese Patent JP4895449
Kind Code:
B2
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Inventors:
Junko Shirakawa
Application Number:
JP2001298961A
Publication Date:
March 14, 2012
Filing Date:
September 28, 2001
Export Citation:
Assignee:
Hitachi Kokusai Electric Co., Ltd.
International Classes:
H04M3/42; H04B7/204; H04B7/26; H04B17/00; H04B17/20; H04Q5/22; H04W4/06; H04W16/26; H04W28/04; H04W92/18
Domestic Patent References:
| JP3240329A | ||||
| JP58029230A | ||||
| JP10032649A | ||||
| JP9233538A | ||||
| JP57080837A |