BR7701907A - Aperfeicoamentos em perfuratrizes da crosta terrestre - Google Patents

Aperfeicoamentos em perfuratrizes da crosta terrestre

Info

Publication number
BR7701907A
BR7701907A BR7701907A BR7701907A BR7701907A BR 7701907 A BR7701907 A BR 7701907A BR 7701907 A BR7701907 A BR 7701907A BR 7701907 A BR7701907 A BR 7701907A BR 7701907 A BR7701907 A BR 7701907A
Authority
BR
Brazil
Prior art keywords
drills
earth cross
earth
cross
Prior art date
Application number
BR7701907A
Other languages
English (en)
Inventor
D Barcellos
Original Assignee
D Barcellos
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 D Barcellos filed Critical D Barcellos
Priority to BR7701907A priority Critical patent/BR7701907A/pt
Publication of BR7701907A publication Critical patent/BR7701907A/pt

Links

BR7701907A 1977-03-25 1977-03-25 Aperfeicoamentos em perfuratrizes da crosta terrestre BR7701907A (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR7701907A BR7701907A (pt) 1977-03-25 1977-03-25 Aperfeicoamentos em perfuratrizes da crosta terrestre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR7701907A BR7701907A (pt) 1977-03-25 1977-03-25 Aperfeicoamentos em perfuratrizes da crosta terrestre

Publications (1)

Publication Number Publication Date
BR7701907A true BR7701907A (pt) 1978-10-10

Family

ID=4004674

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7701907A BR7701907A (pt) 1977-03-25 1977-03-25 Aperfeicoamentos em perfuratrizes da crosta terrestre

Country Status (1)

Country Link
BR (1) BR7701907A (pt)

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