JPH01180587U - - Google Patents

Info

Publication number
JPH01180587U
JPH01180587U JP7724888U JP7724888U JPH01180587U JP H01180587 U JPH01180587 U JP H01180587U JP 7724888 U JP7724888 U JP 7724888U JP 7724888 U JP7724888 U JP 7724888U JP H01180587 U JPH01180587 U JP H01180587U
Authority
JP
Japan
Prior art keywords
cutting edge
core bit
utility
scope
longitudinal section
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
JP7724888U
Other languages
English (en)
Japanese (ja)
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 JP7724888U priority Critical patent/JPH01180587U/ja
Publication of JPH01180587U publication Critical patent/JPH01180587U/ja
Pending legal-status Critical Current

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  • Earth Drilling (AREA)
JP7724888U 1988-06-13 1988-06-13 Pending JPH01180587U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7724888U JPH01180587U (enrdf_load_stackoverflow) 1988-06-13 1988-06-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7724888U JPH01180587U (enrdf_load_stackoverflow) 1988-06-13 1988-06-13

Publications (1)

Publication Number Publication Date
JPH01180587U true JPH01180587U (enrdf_load_stackoverflow) 1989-12-26

Family

ID=31302244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7724888U Pending JPH01180587U (enrdf_load_stackoverflow) 1988-06-13 1988-06-13

Country Status (1)

Country Link
JP (1) JPH01180587U (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331830B2 (enrdf_load_stackoverflow) * 1976-09-18 1978-09-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331830B2 (enrdf_load_stackoverflow) * 1976-09-18 1978-09-05

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