JPS52155701U - - Google Patents

Info

Publication number
JPS52155701U
JPS52155701U JP6446576U JP6446576U JPS52155701U JP S52155701 U JPS52155701 U JP S52155701U JP 6446576 U JP6446576 U JP 6446576U JP 6446576 U JP6446576 U JP 6446576U JP S52155701 U JPS52155701 U JP S52155701U
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.)
Granted
Application number
JP6446576U
Other languages
Japanese (ja)
Other versions
JPS556864Y2 (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 true JPS52155701U (ko) 1977-11-26
JPS556864Y2 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021525842A (ja) * 2018-05-21 2021-09-27 エピロック ロック ドリルス アクチボラグ 掘削リグにおけるドリルビット交換システム、該交換システムを備えた掘削リグ及び該システムを使用するドリルビット交換方法

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021525842A (ja) * 2018-05-21 2021-09-27 エピロック ロック ドリルス アクチボラグ 掘削リグにおけるドリルビット交換システム、該交換システムを備えた掘削リグ及び該システムを使用するドリルビット交換方法

Also Published As

Publication number Publication date
JPS556864Y2 (ko) 1980-02-15

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