JPS50157202A - - Google Patents

Info

Publication number
JPS50157202A
JPS50157202A JP6506874A JP6506874A JPS50157202A JP S50157202 A JPS50157202 A JP S50157202A JP 6506874 A JP6506874 A JP 6506874A JP 6506874 A JP6506874 A JP 6506874A JP S50157202 A JPS50157202 A JP S50157202A
Authority
JP
Japan
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
JP6506874A
Other languages
Japanese (ja)
Other versions
JPS5410325B2 (de
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 JP6506874A priority Critical patent/JPS5410325B2/ja
Publication of JPS50157202A publication Critical patent/JPS50157202A/ja
Publication of JPS5410325B2 publication Critical patent/JPS5410325B2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP6506874A 1974-06-10 1974-06-10 Expired JPS5410325B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6506874A JPS5410325B2 (de) 1974-06-10 1974-06-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6506874A JPS5410325B2 (de) 1974-06-10 1974-06-10

Publications (2)

Publication Number Publication Date
JPS50157202A true JPS50157202A (de) 1975-12-19
JPS5410325B2 JPS5410325B2 (de) 1979-05-04

Family

ID=13276249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6506874A Expired JPS5410325B2 (de) 1974-06-10 1974-06-10

Country Status (1)

Country Link
JP (1) JPS5410325B2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883790A (ja) * 1981-11-12 1983-05-19 住友電気工業株式会社 ドリルビット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135341A (en) * 1960-10-04 1964-06-02 Christensen Diamond Prod Co Diamond drill bits
FR2029963A5 (de) * 1969-03-19 1970-10-23 Petroles Cie Francaise

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135341A (en) * 1960-10-04 1964-06-02 Christensen Diamond Prod Co Diamond drill bits
FR2029963A5 (de) * 1969-03-19 1970-10-23 Petroles Cie Francaise

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883790A (ja) * 1981-11-12 1983-05-19 住友電気工業株式会社 ドリルビット
JPH0368198B2 (de) * 1981-11-12 1991-10-25 Sumitomo Electric Industries

Also Published As

Publication number Publication date
JPS5410325B2 (de) 1979-05-04

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