NL42573C - - Google Patents

Info

Publication number: NL42573C
Authority: NL; Netherlands

Application number

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.)

1934-02-15

Publication of NL42573C publication Critical patent/NL42573C/xx

Classifications

- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers

Landscapes

Engineering & Computer Science (AREA)
Life Sciences & Earth Sciences (AREA)
Geology (AREA)
Mining & Mineral Resources (AREA)
Mechanical Engineering (AREA)
Physics & Mathematics (AREA)
Environmental & Geological Engineering (AREA)
Fluid Mechanics (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Earth Drilling (AREA)

NL42573D 1934-02-15 NL42573C (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DEP68949D DE631395C (de)	1934-02-15	1934-02-15	Mitnehmer fuer hydraulische Tiefbohrzylinder

Publications (1)

Publication Number	Publication Date
NL42573C true NL42573C (de)

Family

ID=7391322

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL42573D NL42573C (de)	1934-02-15

Country Status (3)

Country	Link
DE (1)	DE631395C (de)
FR (1)	FR796447A (de)
NL (1)	NL42573C (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE833334C (de) *	1950-09-14	1952-03-06	Rautenkranz Int Hermann	Einrichtung zum Herstellen von Grossbohrloechern, insbesondere fuer bergmaennische Zwecke

0
- NL NL42573D patent/NL42573C/xx active
1934
- 1934-02-15 DE DEP68949D patent/DE631395C/de not_active Expired
1935
- 1935-10-17 FR FR796447D patent/FR796447A/fr not_active Expired

Also Published As

Publication number	Publication date
FR796447A (fr)	1936-04-07
DE631395C (de)	1936-06-19

Publication	Publication Date	Title
FR759428A (de)	1934-02-01
FR767443A (de)	1934-07-16
BE401514A (de)
BE402584A (de)	1934-05-31
BE350814A (de)
BE355850A (de)
BE399909A (de)
BE400763A (de)	1934-02-28
BE400945A (de)
BE400974A (de)
BE401025A (de)	1934-02-28
BE401210A (de)
BE401211A (de)
BE401222A (de)	1934-03-31
BE401226A (de)
BE401237A (de)
NL42193C (de)
NL41370C (de)
NL40958C (de)
BE402626A (de)
BE402391A (de)	1934-05-31
BE401688A (de)
BE401725A (de)
BE423422A (de)	1937-11-30
BE403563A (de)