JPH01137490U - - Google Patents

Info

Publication number
JPH01137490U
JPH01137490U JP3361388U JP3361388U JPH01137490U JP H01137490 U JPH01137490 U JP H01137490U JP 3361388 U JP3361388 U JP 3361388U JP 3361388 U JP3361388 U JP 3361388U JP H01137490 U JPH01137490 U JP H01137490U
Authority
JP
Japan
Prior art keywords
tunnel
radio waves
worker
transmitting device
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3361388U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0542381Y2 (xx
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988033613U priority Critical patent/JPH0542381Y2/ja
Publication of JPH01137490U publication Critical patent/JPH01137490U/ja
Application granted granted Critical
Publication of JPH0542381Y2 publication Critical patent/JPH0542381Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Mobile Radio Communication Systems (AREA)
JP1988033613U 1988-03-14 1988-03-14 Expired - Lifetime JPH0542381Y2 (xx)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988033613U JPH0542381Y2 (xx) 1988-03-14 1988-03-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988033613U JPH0542381Y2 (xx) 1988-03-14 1988-03-14

Publications (2)

Publication Number Publication Date
JPH01137490U true JPH01137490U (xx) 1989-09-20
JPH0542381Y2 JPH0542381Y2 (xx) 1993-10-26

Family

ID=31260304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988033613U Expired - Lifetime JPH0542381Y2 (xx) 1988-03-14 1988-03-14

Country Status (1)

Country Link
JP (1) JPH0542381Y2 (xx)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5764887A (en) * 1980-10-07 1982-04-20 Tokyo Shibaura Electric Co Inlet outlet monitoring system for nuclear substance handling facility
JPS5946873A (ja) * 1982-09-10 1984-03-16 Meisei Electric Co Ltd 移動体の通過判定方式
JPS5999303A (ja) * 1982-11-30 1984-06-08 Sumitomo Electric Ind Ltd 移動体上の搭載物絶対位置検出装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5764887A (en) * 1980-10-07 1982-04-20 Tokyo Shibaura Electric Co Inlet outlet monitoring system for nuclear substance handling facility
JPS5946873A (ja) * 1982-09-10 1984-03-16 Meisei Electric Co Ltd 移動体の通過判定方式
JPS5999303A (ja) * 1982-11-30 1984-06-08 Sumitomo Electric Ind Ltd 移動体上の搭載物絶対位置検出装置

Also Published As

Publication number Publication date
JPH0542381Y2 (xx) 1993-10-26

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