JPS6240750Y2 - - Google Patents

Info

Publication number
JPS6240750Y2
JPS6240750Y2 JP2816581U JP2816581U JPS6240750Y2 JP S6240750 Y2 JPS6240750 Y2 JP S6240750Y2 JP 2816581 U JP2816581 U JP 2816581U JP 2816581 U JP2816581 U JP 2816581U JP S6240750 Y2 JPS6240750 Y2 JP S6240750Y2
Authority
JP
Japan
Prior art keywords
signal
depth control
circuit
rotary drill
cutting
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
Application number
JP2816581U
Other languages
English (en)
Japanese (ja)
Other versions
JPS57140943U (enrdf_load_stackoverflow
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 JP2816581U priority Critical patent/JPS6240750Y2/ja
Publication of JPS57140943U publication Critical patent/JPS57140943U/ja
Application granted granted Critical
Publication of JPS6240750Y2 publication Critical patent/JPS6240750Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Automatic Control Of Machine Tools (AREA)
  • Drilling And Boring (AREA)
JP2816581U 1981-02-27 1981-02-27 Expired JPS6240750Y2 (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2816581U JPS6240750Y2 (enrdf_load_stackoverflow) 1981-02-27 1981-02-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2816581U JPS6240750Y2 (enrdf_load_stackoverflow) 1981-02-27 1981-02-27

Publications (2)

Publication Number Publication Date
JPS57140943U JPS57140943U (enrdf_load_stackoverflow) 1982-09-03
JPS6240750Y2 true JPS6240750Y2 (enrdf_load_stackoverflow) 1987-10-19

Family

ID=29825835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2816581U Expired JPS6240750Y2 (enrdf_load_stackoverflow) 1981-02-27 1981-02-27

Country Status (1)

Country Link
JP (1) JPS6240750Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS57140943U (enrdf_load_stackoverflow) 1982-09-03

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