JPS5681792A - Drill apparatus - Google Patents

Drill apparatus

Info

Publication number
JPS5681792A
JPS5681792A JP15936679A JP15936679A JPS5681792A JP S5681792 A JPS5681792 A JP S5681792A JP 15936679 A JP15936679 A JP 15936679A JP 15936679 A JP15936679 A JP 15936679A JP S5681792 A JPS5681792 A JP S5681792A
Authority
JP
Japan
Prior art keywords
drill apparatus
drill
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
JP15936679A
Other languages
Japanese (ja)
Inventor
Kazuo Yajima
Hiroyuki Hamamura
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.)
Tone Boring Co Ltd
Original Assignee
Tone Boring Co 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 Tone Boring Co Ltd filed Critical Tone Boring Co Ltd
Priority to JP15936679A priority Critical patent/JPS5681792A/en
Publication of JPS5681792A publication Critical patent/JPS5681792A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP15936679A 1979-12-07 1979-12-07 Drill apparatus Pending JPS5681792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15936679A JPS5681792A (en) 1979-12-07 1979-12-07 Drill apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15936679A JPS5681792A (en) 1979-12-07 1979-12-07 Drill apparatus

Publications (1)

Publication Number Publication Date
JPS5681792A true JPS5681792A (en) 1981-07-04

Family

ID=15692262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15936679A Pending JPS5681792A (en) 1979-12-07 1979-12-07 Drill apparatus

Country Status (1)

Country Link
JP (1) JPS5681792A (en)

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