JPS63100593U - - Google Patents

Info

Publication number
JPS63100593U
JPS63100593U JP19255286U JP19255286U JPS63100593U JP S63100593 U JPS63100593 U JP S63100593U JP 19255286 U JP19255286 U JP 19255286U JP 19255286 U JP19255286 U JP 19255286U JP S63100593 U JPS63100593 U JP S63100593U
Authority
JP
Japan
Prior art keywords
duct
resource recovery
opening
smaller
area
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.)
Pending
Application number
JP19255286U
Other languages
English (en)
Japanese (ja)
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 JP19255286U priority Critical patent/JPS63100593U/ja
Publication of JPS63100593U publication Critical patent/JPS63100593U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
JP19255286U 1986-12-15 1986-12-15 Pending JPS63100593U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19255286U JPS63100593U (enrdf_load_stackoverflow) 1986-12-15 1986-12-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19255286U JPS63100593U (enrdf_load_stackoverflow) 1986-12-15 1986-12-15

Publications (1)

Publication Number Publication Date
JPS63100593U true JPS63100593U (enrdf_load_stackoverflow) 1988-06-30

Family

ID=31147738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19255286U Pending JPS63100593U (enrdf_load_stackoverflow) 1986-12-15 1986-12-15

Country Status (1)

Country Link
JP (1) JPS63100593U (enrdf_load_stackoverflow)

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