DE2312365A1 - - Google Patents

Info

Publication number
DE2312365A1
DE2312365A1 DE19732312365 DE2312365A DE2312365A1 DE 2312365 A1 DE2312365 A1 DE 2312365A1 DE 19732312365 DE19732312365 DE 19732312365 DE 2312365 A DE2312365 A DE 2312365A DE 2312365 A1 DE2312365 A1 DE 2312365A1
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.)
Pending
Application number
DE19732312365
Other languages
German (de)
Other versions
DE2312365B1 (de
DE2312365C2 (de
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 GMBH & CO
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 filed Critical
Priority to DE19732312365 priority Critical patent/DE2312365C2/de
Priority claimed from DE19732312365 external-priority patent/DE2312365C2/de
Publication of DE2312365B1 publication Critical patent/DE2312365B1/de
Publication of DE2312365A1 publication Critical patent/DE2312365A1/de
Application granted granted Critical
Publication of DE2312365C2 publication Critical patent/DE2312365C2/de
Expired legal-status Critical Current

Links

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
DE2312365B1 DE2312365B1 (de) 1974-09-05
DE2312365A1 true DE2312365A1 (xx) 1974-09-05
DE2312365C2 DE2312365C2 (de) 1976-04-15

Family

ID=

Also Published As

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

Similar Documents

Publication Publication Date Title
AU476761B2 (xx)
AU474593B2 (xx)
AU474511B2 (xx)
AU474838B2 (xx)
AU465453B2 (xx)
AU465434B2 (xx)
AU471343B2 (xx)
AU476714B2 (xx)
AU472848B2 (xx)
AU476696B2 (xx)
AU466283B2 (xx)
AR199451A1 (xx)
AU477823B2 (xx)
AU476873B1 (xx)
AR195311A1 (xx)
AR196382A1 (xx)
AR195948A1 (xx)
AR193950A1 (xx)
AU477824B2 (xx)
AU471461B2 (xx)
AR197627A1 (xx)
AR196212Q (xx)
AR196123Q (xx)
AU479496A (xx)
AU479521A (xx)

Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8327 Change in the person/name/address of the patent owner

Owner name: WIEMER & TRACHTE STAHLBETON- UND TIEFBAU GMBH & CO

8320 Willingness to grant licences declared (paragraph 23)