JPH0747493Y2 - ボーリングマシン - Google Patents

ボーリングマシン

Info

Publication number
JPH0747493Y2
JPH0747493Y2 JP5306490U JP5306490U JPH0747493Y2 JP H0747493 Y2 JPH0747493 Y2 JP H0747493Y2 JP 5306490 U JP5306490 U JP 5306490U JP 5306490 U JP5306490 U JP 5306490U JP H0747493 Y2 JPH0747493 Y2 JP H0747493Y2
Authority
JP
Japan
Prior art keywords
pressure
jack
tightening
opening
casing tube
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.)
Expired - Fee Related
Application number
JP5306490U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0412591U (enrdf_load_stackoverflow
Inventor
裕三 北村
菊次 江川
義弘 久下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP5306490U priority Critical patent/JPH0747493Y2/ja
Publication of JPH0412591U publication Critical patent/JPH0412591U/ja
Application granted granted Critical
Publication of JPH0747493Y2 publication Critical patent/JPH0747493Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP5306490U 1990-05-23 1990-05-23 ボーリングマシン Expired - Fee Related JPH0747493Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5306490U JPH0747493Y2 (ja) 1990-05-23 1990-05-23 ボーリングマシン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5306490U JPH0747493Y2 (ja) 1990-05-23 1990-05-23 ボーリングマシン

Publications (2)

Publication Number Publication Date
JPH0412591U JPH0412591U (enrdf_load_stackoverflow) 1992-01-31
JPH0747493Y2 true JPH0747493Y2 (ja) 1995-11-01

Family

ID=31573924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5306490U Expired - Fee Related JPH0747493Y2 (ja) 1990-05-23 1990-05-23 ボーリングマシン

Country Status (1)

Country Link
JP (1) JPH0747493Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0412591U (enrdf_load_stackoverflow) 1992-01-31

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees