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BR7802962A - Aperfeicoamento em brocas para perfuracoes subterraneas - Google Patents

Aperfeicoamento em brocas para perfuracoes subterraneas

Info

Publication number
BR7802962A
BR7802962A BR7802962A BR7802962A BR7802962A BR 7802962 A BR7802962 A BR 7802962A BR 7802962 A BR7802962 A BR 7802962A BR 7802962 A BR7802962 A BR 7802962A BR 7802962 A BR7802962 A BR 7802962A
Authority
BR
Brazil
Prior art keywords
drilling
drill
underground
underground drilling
drill drilling
Prior art date
Application number
BR7802962A
Other languages
English (en)
Inventor
S Nakahara
Original Assignee
S Nakahara
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 S Nakahara filed Critical S Nakahara
Priority to BR7802962A priority Critical patent/BR7802962A/pt
Publication of BR7802962A publication Critical patent/BR7802962A/pt

Links

BR7802962A 1978-05-10 1978-05-10 Aperfeicoamento em brocas para perfuracoes subterraneas BR7802962A (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR7802962A BR7802962A (pt) 1978-05-10 1978-05-10 Aperfeicoamento em brocas para perfuracoes subterraneas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR7802962A BR7802962A (pt) 1978-05-10 1978-05-10 Aperfeicoamento em brocas para perfuracoes subterraneas

Publications (1)

Publication Number Publication Date
BR7802962A true BR7802962A (pt) 1979-12-04

Family

ID=4011475

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7802962A BR7802962A (pt) 1978-05-10 1978-05-10 Aperfeicoamento em brocas para perfuracoes subterraneas

Country Status (1)

Country Link
BR (1) BR7802962A (pt)

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