ES514313A0 - Trepano giratorio para roca mejorado. - Google Patents

Trepano giratorio para roca mejorado.

Info

Publication number
ES514313A0
ES514313A0 ES514313A ES514313A ES514313A0 ES 514313 A0 ES514313 A0 ES 514313A0 ES 514313 A ES514313 A ES 514313A ES 514313 A ES514313 A ES 514313A ES 514313 A0 ES514313 A0 ES 514313A0
Authority
ES
Spain
Prior art keywords
trepano
rock
improved rocking
rocking
improved
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.)
Granted
Application number
ES514313A
Other languages
English (en)
Other versions
ES8400531A1 (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.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
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 Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of ES8400531A1 publication Critical patent/ES8400531A1/es
Publication of ES514313A0 publication Critical patent/ES514313A0/es
Granted legal-status Critical Current

Links

ES514313A 1981-07-24 1982-07-23 Trepano giratorio para roca mejorado. Granted ES514313A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28631981A 1981-07-24 1981-07-24

Publications (2)

Publication Number Publication Date
ES8400531A1 ES8400531A1 (es) 1983-10-16
ES514313A0 true ES514313A0 (es) 1983-10-16

Family

ID=23098068

Family Applications (1)

Application Number Title Priority Date Filing Date
ES514313A Granted ES514313A0 (es) 1981-07-24 1982-07-23 Trepano giratorio para roca mejorado.

Country Status (6)

Country Link
AU (1) AU8506282A (es)
CA (1) CA1171072A (es)
ES (1) ES514313A0 (es)
NO (1) NO822537L (es)
ZA (1) ZA824299B (es)
ZM (1) ZM4682A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516640A (en) * 1983-12-08 1985-05-14 Santrade Ltd. Rotary drill bit

Also Published As

Publication number Publication date
NO822537L (no) 1983-01-25
CA1171072A (en) 1984-07-17
ES8400531A1 (es) 1983-10-16
AU8506282A (en) 1983-01-27
ZA824299B (en) 1983-04-27
ZM4682A1 (en) 1984-09-21

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20000201