JPS4959702A - - Google Patents

Info

Publication number
JPS4959702A
JPS4959702A JP10273472A JP10273472A JPS4959702A JP S4959702 A JPS4959702 A JP S4959702A JP 10273472 A JP10273472 A JP 10273472A JP 10273472 A JP10273472 A JP 10273472A JP S4959702 A JPS4959702 A JP S4959702A
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
JP10273472A
Other languages
Japanese (ja)
Other versions
JPS521681B2 (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 JP10273472A priority Critical patent/JPS521681B2/ja
Priority to GB4779273A priority patent/GB1452751A/en
Priority to GB1794876A priority patent/GB1452752A/en
Priority to AT875573A priority patent/AT327845B/de
Priority to US406482A priority patent/US3894590A/en
Priority to NO733983A priority patent/NO142228C/no
Priority to CA183,405A priority patent/CA982114A/en
Priority to SE7313975A priority patent/SE407255B/xx
Priority to DE2351742A priority patent/DE2351742C3/de
Priority to NL7314158.A priority patent/NL159164B/xx
Priority to AU61444/73A priority patent/AU468564B2/en
Priority to FR7336837A priority patent/FR2203016B1/fr
Publication of JPS4959702A publication Critical patent/JPS4959702A/ja
Priority to CA230,002A priority patent/CA998383A/en
Publication of JPS521681B2 publication Critical patent/JPS521681B2/ja
Priority to SE7707003A priority patent/SE424757B/xx
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP10273472A 1972-10-16 1972-10-16 Expired JPS521681B2 (enrdf_load_stackoverflow)

Priority Applications (14)

Application Number Priority Date Filing Date Title
JP10273472A JPS521681B2 (enrdf_load_stackoverflow) 1972-10-16 1972-10-16
GB4779273A GB1452751A (en) 1972-10-16 1973-10-12 Drilling system and method of pulling it up
GB1794876A GB1452752A (en) 1972-10-16 1973-10-12 Method of pulling-up the cutting head of drilling apparatus
SE7313975A SE407255B (sv) 1972-10-16 1973-10-15 Borrsystem
US406482A US3894590A (en) 1972-10-16 1973-10-15 Drilling system
NO733983A NO142228C (no) 1972-10-16 1973-10-15 Boreinnretning og fremgangsmaate til aa trekke opp innretningens skjaereorganer
CA183,405A CA982114A (en) 1972-10-16 1973-10-15 Drilling system and method of pulling it up
AT875573A AT327845B (de) 1972-10-16 1973-10-15 Bohrvorrichtung
DE2351742A DE2351742C3 (de) 1972-10-16 1973-10-15 Durch einen Rohrstrang absenkbare Bohreinrichtung und Fangvorrichtung dafür
NL7314158.A NL159164B (nl) 1972-10-16 1973-10-15 Boorsysteem met een boorpijp en een hierdoorheen verplaatsbaar, en in het ondereinde losneembaar vergrendelbaar boorbeitelsamenstel met een inwendige spoelvloeistofdoorvoer.
AU61444/73A AU468564B2 (en) 1972-10-16 1973-10-16 Drilling system and method of pulling it up
FR7336837A FR2203016B1 (enrdf_load_stackoverflow) 1972-10-16 1973-10-16
CA230,002A CA998383A (en) 1972-10-16 1975-06-24 Drilling system and method of pulling it up
SE7707003A SE424757B (sv) 1972-10-16 1977-06-16 Sett att draga ut en borrkrona ur ett borrhal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10273472A JPS521681B2 (enrdf_load_stackoverflow) 1972-10-16 1972-10-16

Publications (2)

Publication Number Publication Date
JPS4959702A true JPS4959702A (enrdf_load_stackoverflow) 1974-06-10
JPS521681B2 JPS521681B2 (enrdf_load_stackoverflow) 1977-01-17

Family

ID=14335462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10273472A Expired JPS521681B2 (enrdf_load_stackoverflow) 1972-10-16 1972-10-16

Country Status (1)

Country Link
JP (1) JPS521681B2 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6278393A (ja) * 1985-09-30 1987-04-10 国土防災技術株式会社 多段式拡孔ビツト

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6278393A (ja) * 1985-09-30 1987-04-10 国土防災技術株式会社 多段式拡孔ビツト

Also Published As

Publication number Publication date
JPS521681B2 (enrdf_load_stackoverflow) 1977-01-17

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