JPS5223482B2 - - Google Patents

Info

Publication number
JPS5223482B2
JPS5223482B2 JP14322573A JP14322573A JPS5223482B2 JP S5223482 B2 JPS5223482 B2 JP S5223482B2 JP 14322573 A JP14322573 A JP 14322573A JP 14322573 A JP14322573 A JP 14322573A JP S5223482 B2 JPS5223482 B2 JP S5223482B2
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.)
Expired
Application number
JP14322573A
Other languages
Japanese (ja)
Other versions
JPS5091903A (en
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 JP14322573A priority Critical patent/JPS5223482B2/ja
Priority to US05/512,067 priority patent/US3945445A/en
Priority to IT53518/74A priority patent/IT1021790B/en
Priority to FR7434460A priority patent/FR2247607A1/fr
Priority to DE19742449108 priority patent/DE2449108A1/en
Publication of JPS5091903A publication Critical patent/JPS5091903A/ja
Publication of JPS5223482B2 publication Critical patent/JPS5223482B2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP14322573A 1973-10-15 1973-12-20 Expired JPS5223482B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP14322573A JPS5223482B2 (en) 1973-12-20 1973-12-20
US05/512,067 US3945445A (en) 1973-10-15 1974-10-04 Boring apparatus provided with drill bits freely rotatable around their own axis
IT53518/74A IT1021790B (en) 1973-10-15 1974-10-14 DRILLING EQUIPMENT
FR7434460A FR2247607A1 (en) 1973-10-15 1974-10-14
DE19742449108 DE2449108A1 (en) 1973-10-15 1974-10-15 DRILLING MACHINE WITH DRILLING CHISELS FREELY ROTATABLE AROUND THEIR AXIS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14322573A JPS5223482B2 (en) 1973-12-20 1973-12-20

Publications (2)

Publication Number Publication Date
JPS5091903A JPS5091903A (en) 1975-07-23
JPS5223482B2 true JPS5223482B2 (en) 1977-06-24

Family

ID=15333792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14322573A Expired JPS5223482B2 (en) 1973-10-15 1973-12-20

Country Status (1)

Country Link
JP (1) JPS5223482B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253111B2 (en) * 1981-02-27 1990-11-15 Tokyo Shibaura Electric Co

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253111B2 (en) * 1981-02-27 1990-11-15 Tokyo Shibaura Electric Co

Also Published As

Publication number Publication date
JPS5091903A (en) 1975-07-23

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