JPS556864Y2 - - Google Patents

Info

Publication number
JPS556864Y2
JPS556864Y2 JP1976064465U JP6446576U JPS556864Y2 JP S556864 Y2 JPS556864 Y2 JP S556864Y2 JP 1976064465 U JP1976064465 U JP 1976064465U JP 6446576 U JP6446576 U JP 6446576U JP S556864 Y2 JPS556864 Y2 JP S556864Y2
Authority
JP
Japan
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.)
Expired
Application number
JP1976064465U
Other languages
Japanese (ja)
Other versions
JPS52155701U (ko
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 JP1976064465U priority Critical patent/JPS556864Y2/ja
Publication of JPS52155701U publication Critical patent/JPS52155701U/ja
Application granted granted Critical
Publication of JPS556864Y2 publication Critical patent/JPS556864Y2/ja
Expired legal-status Critical Current

Links

JP1976064465U 1976-05-20 1976-05-20 Expired JPS556864Y2 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1976064465U JPS556864Y2 (ko) 1976-05-20 1976-05-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976064465U JPS556864Y2 (ko) 1976-05-20 1976-05-20

Publications (2)

Publication Number Publication Date
JPS52155701U JPS52155701U (ko) 1977-11-26
JPS556864Y2 true JPS556864Y2 (ko) 1980-02-15

Family

ID=28528621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1976064465U Expired JPS556864Y2 (ko) 1976-05-20 1976-05-20

Country Status (1)

Country Link
JP (1) JPS556864Y2 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE543092C2 (en) * 2018-05-21 2020-10-06 Epiroc Rock Drills Ab System for drill bit change in a drilling rig, drilling rig comprising such a system, and a method for changing drill bits using such a system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972388A (en) * 1953-08-14 1961-02-21 Bucyrus Erie Co Well drill pipe-handling apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972388A (en) * 1953-08-14 1961-02-21 Bucyrus Erie Co Well drill pipe-handling apparatus

Also Published As

Publication number Publication date
JPS52155701U (ko) 1977-11-26

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