JPH0562195B2 - - Google Patents

Info

Publication number
JPH0562195B2
JPH0562195B2 JP61222840A JP22284086A JPH0562195B2 JP H0562195 B2 JPH0562195 B2 JP H0562195B2 JP 61222840 A JP61222840 A JP 61222840A JP 22284086 A JP22284086 A JP 22284086A JP H0562195 B2 JPH0562195 B2 JP H0562195B2
Authority
JP
Japan
Prior art keywords
groove
ground
drill collar
insulator
circumferential surface
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 - Lifetime
Application number
JP61222840A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6378990A (ja
Inventor
Ichiro Takahashi
So Shirasawa
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 Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP61222840A priority Critical patent/JPS6378990A/ja
Publication of JPS6378990A publication Critical patent/JPS6378990A/ja
Publication of JPH0562195B2 publication Critical patent/JPH0562195B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Insulating Bodies (AREA)
  • External Artificial Organs (AREA)
JP61222840A 1986-09-19 1986-09-19 送信装置及びその製造方法 Granted JPS6378990A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61222840A JPS6378990A (ja) 1986-09-19 1986-09-19 送信装置及びその製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61222840A JPS6378990A (ja) 1986-09-19 1986-09-19 送信装置及びその製造方法

Publications (2)

Publication Number Publication Date
JPS6378990A JPS6378990A (ja) 1988-04-09
JPH0562195B2 true JPH0562195B2 (enrdf_load_stackoverflow) 1993-09-07

Family

ID=16788731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61222840A Granted JPS6378990A (ja) 1986-09-19 1986-09-19 送信装置及びその製造方法

Country Status (1)

Country Link
JP (1) JPS6378990A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6378990A (ja) 1988-04-09

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