ES28485A1 - Improvements in drilling apparatus. - Google Patents

Improvements in drilling apparatus.

Info

Publication number
ES28485A1
ES28485A1 ES28485A ES28485A ES28485A1 ES 28485 A1 ES28485 A1 ES 28485A1 ES 28485 A ES28485 A ES 28485A ES 28485 A ES28485 A ES 28485A ES 28485 A1 ES28485 A1 ES 28485A1
Authority
ES
Spain
Prior art keywords
drilling apparatus
drilling
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.)
Expired
Application number
ES28485A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KCA Deutag Tiefbohr GmbH
Original Assignee
Deutag Deutsche Tiefbohr AG
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 Deutag Deutsche Tiefbohr AG filed Critical Deutag Deutsche Tiefbohr AG
Priority to ES28485A priority Critical patent/ES28485A1/en
Publication of ES28485A1 publication Critical patent/ES28485A1/en
Expired legal-status Critical Current

Links

ES28485A 1901-09-11 1901-09-11 Improvements in drilling apparatus. Expired ES28485A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES28485A ES28485A1 (en) 1901-09-11 1901-09-11 Improvements in drilling apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES28485A ES28485A1 (en) 1901-09-11 1901-09-11 Improvements in drilling apparatus.

Publications (1)

Publication Number Publication Date
ES28485A1 true ES28485A1 (en) 1901-11-01

Family

ID=64170275

Family Applications (1)

Application Number Title Priority Date Filing Date
ES28485A Expired ES28485A1 (en) 1901-09-11 1901-09-11 Improvements in drilling apparatus.

Country Status (1)

Country Link
ES (1) ES28485A1 (en)

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