DE2312365A1 - - Google Patents

Info

Publication number: DE2312365A1
Authority: DE; Germany
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

DE19732312365

Other versions

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.)

Wiemer & Trachte Stahlbeton- und Tiefbau & Co GmbH

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.)

1973-03-13

Filing date

1973-03-13

Publication date

1974-09-05

1973-03-13 Application filed filed Critical

1973-03-13 Priority to DE19732312365 priority Critical patent/DE2312365C2/de

1973-03-13 Priority claimed from DE19732312365 external-priority patent/DE2312365C2/de

1974-09-05 Publication of DE2312365A1 publication Critical patent/DE2312365A1/de

1974-09-05 Publication of DE2312365B1 publication Critical patent/DE2312365B1/de

1976-04-15 Application granted granted Critical

1976-04-15 Publication of DE2312365C2 publication Critical patent/DE2312365C2/de

Status Expired legal-status Critical Current

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
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

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)

DE19732312365 1973-03-13 Schneckenbohrer zum Herstellen von Großbohrlöchern in Gestein Expired DE2312365C2 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
DE19732312365 DE2312365C2 (de)		1973-03-13	Schneckenbohrer zum Herstellen von Großbohrlöchern in Gestein

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19732312365 DE2312365C2 (de)		1973-03-13	Schneckenbohrer zum Herstellen von Großbohrlöchern in Gestein

Publications (3)

Publication Number	Publication Date
DE2312365A1 true DE2312365A1 (de)	1974-09-05
DE2312365B1 DE2312365B1 (de)	1974-09-05
DE2312365C2 DE2312365C2 (de)	1976-04-15

Family

ID=

Also Published As

Publication number	Publication date
DE2312365B1 (de)	1974-09-05

Publication	Publication Date	Title
AR201758A1 (de)	1975-04-15
AU476761B2 (de)	1976-09-30
AU465372B2 (de)	1975-09-25
AR201235Q (de)	1975-02-21
AR201231Q (de)	1975-02-21
AU474593B2 (de)	1976-07-29
AU474511B2 (de)	1976-07-22
AU474838B2 (de)	1976-08-05
AU471343B2 (de)	1976-04-15
AU465453B2 (de)	1975-09-25
AU465434B2 (de)	1975-09-25
AU450229B2 (de)	1974-07-04
AU476714B2 (de)	1976-09-30
AR201229Q (de)	1975-02-21
AU466283B2 (de)	1975-10-23
AR199451A1 (de)	1974-08-30
AU476696B2 (de)	1976-09-30
AU472848B2 (de)	1976-06-03
AU477823B2 (de)	1975-06-19
AU461342B2 (de)	1975-05-22
AU471461B2 (de)	1976-04-29
AR200256A1 (de)	1974-10-31
AU476873B1 (de)	1975-01-09
AR210729A1 (de)	1977-09-15
AU477824B2 (de)	1975-07-17

Legal Events

Date	Code	Title	Description
1977-12-31	E77	Valid patent as to the heymanns-index 1977
1987-03-19	8327	Change in the person/name/address of the patent owner	Owner name: WIEMER & TRACHTE STAHLBETON- UND TIEFBAU GMBH & CO
1988-04-28	8320	Willingness to grant licences declared (paragraph 23)