JPS5552497A - Drill bit - Google Patents

Drill bit

Info

Publication number
JPS5552497A
JPS5552497A JP12539078A JP12539078A JPS5552497A JP S5552497 A JPS5552497 A JP S5552497A JP 12539078 A JP12539078 A JP 12539078A JP 12539078 A JP12539078 A JP 12539078A JP S5552497 A JPS5552497 A JP S5552497A
Authority
JP
Japan
Prior art keywords
drill bit
drill
bit
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.)
Granted
Application number
JP12539078A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5618754B2 (enrdf_load_stackoverflow
Inventor
Akio Yamada
Shiyouhachi Shimizu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP12539078A priority Critical patent/JPS5552497A/ja
Publication of JPS5552497A publication Critical patent/JPS5552497A/ja
Publication of JPS5618754B2 publication Critical patent/JPS5618754B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP12539078A 1978-10-12 1978-10-12 Drill bit Granted JPS5552497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12539078A JPS5552497A (en) 1978-10-12 1978-10-12 Drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12539078A JPS5552497A (en) 1978-10-12 1978-10-12 Drill bit

Publications (2)

Publication Number Publication Date
JPS5552497A true JPS5552497A (en) 1980-04-16
JPS5618754B2 JPS5618754B2 (enrdf_load_stackoverflow) 1981-05-01

Family

ID=14908944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12539078A Granted JPS5552497A (en) 1978-10-12 1978-10-12 Drill bit

Country Status (1)

Country Link
JP (1) JPS5552497A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013227766A (ja) * 2012-04-25 2013-11-07 Mitsubishi Materials Corp 掘削工具
JP2015036467A (ja) * 2013-08-09 2015-02-23 三菱マテリアル株式会社 掘削工具及び揺動制御管

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61199261U (enrdf_load_stackoverflow) * 1985-06-04 1986-12-12
JPH06154060A (ja) * 1993-06-07 1994-06-03 Kokuyo Co Ltd 劇場などの換気装置及びその設置方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH045572U (enrdf_load_stackoverflow) * 1990-05-01 1992-01-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH045572U (enrdf_load_stackoverflow) * 1990-05-01 1992-01-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013227766A (ja) * 2012-04-25 2013-11-07 Mitsubishi Materials Corp 掘削工具
JP2015036467A (ja) * 2013-08-09 2015-02-23 三菱マテリアル株式会社 掘削工具及び揺動制御管

Also Published As

Publication number Publication date
JPS5618754B2 (enrdf_load_stackoverflow) 1981-05-01

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