PL255912A1 - Double-core drill pipe for rocky formations - Google Patents

Double-core drill pipe for rocky formations

Info

Publication number: PL255912A1
Authority: PL; Poland
Prior art keywords: double; drill pipe; core drill; rocky formations; rocky
Prior art date: 1984-11-08

Application number

PL25591285A

Other languages

English (en)

Inventor

Siegmar Thomaschewski

Winfried Rettig

Karl Wiesecke

Original Assignee

Geol Erkundung Stendal Veb

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.)

1984-11-08

Filing date

1985-10-24

Publication date

1986-09-23

1985-10-24 Application filed by Geol Erkundung Stendal Veb filed Critical Geol Erkundung Stendal Veb

1986-09-23 Publication of PL255912A1 publication Critical patent/PL255912A1/xx

Links

230000015572 biosynthetic process Effects 0.000 title 1
238000005755 formation reaction Methods 0.000 title 1

PL25591285A 1984-11-08 1985-10-24 Double-core drill pipe for rocky formations PL255912A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DD26923684A DD250238A3 (de)	1984-11-08	1984-11-08	Kombinations-doppelkernrohr fuer die gesteinszerstoerung

Publications (1)

Publication Number	Publication Date
PL255912A1 true PL255912A1 (en)	1986-09-23

Family

ID=5562042

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
PL25591285A PL255912A1 (en)	1984-11-08	1985-10-24	Double-core drill pipe for rocky formations

Country Status (5)

Country	Link
BG (1)	BG50675A1 (cs)
CS (1)	CS753785A1 (cs)
DD (1)	DD250238A3 (cs)
HU (1)	HUT53189A (cs)
PL (1)	PL255912A1 (cs)

1984
- 1984-11-08 DD DD26923684A patent/DD250238A3/de not_active IP Right Cessation
1985
- 1985-10-04 BG BG7191085A patent/BG50675A1/xx unknown
- 1985-10-21 CS CS857537A patent/CS753785A1/cs unknown
- 1985-10-24 PL PL25591285A patent/PL255912A1/xx unknown
- 1985-10-29 HU HU414885A patent/HUT53189A/hu unknown

Also Published As

Publication number	Publication date
CS753785A1 (en)	1987-12-17
BG50675A1 (en)	1992-10-15
DD250238A3 (de)	1987-10-08
HUT53189A (en)	1990-09-28

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