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 (US07652168-20100126-C00068.png
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 (US07652168-20100126-C00068.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988033613U JPH0542381Y2 (US07652168-20100126-C00068.png) 1988-03-14 1988-03-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988033613U JPH0542381Y2 (US07652168-20100126-C00068.png) 1988-03-14 1988-03-14

Publications (2)

Publication Number Publication Date
JPH01137490U true JPH01137490U (US07652168-20100126-C00068.png) 1989-09-20
JPH0542381Y2 JPH0542381Y2 (US07652168-20100126-C00068.png) 1993-10-26

Family

ID=31260304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988033613U Expired - Lifetime JPH0542381Y2 (US07652168-20100126-C00068.png) 1988-03-14 1988-03-14

Country Status (1)

Country Link
JP (1) JPH0542381Y2 (US07652168-20100126-C00068.png)

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 (US07652168-20100126-C00068.png) 1993-10-26

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