DE2205594A1 - - Google Patents

Info

Publication number
DE2205594A1
DE2205594A1 DE19722205594 DE2205594A DE2205594A1 DE 2205594 A1 DE2205594 A1 DE 2205594A1 DE 19722205594 DE19722205594 DE 19722205594 DE 2205594 A DE2205594 A DE 2205594A DE 2205594 A1 DE2205594 A1 DE 2205594A1
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
DE19722205594
Other languages
German (de)
Other versions
DE2205594B1 (en
DE2205594C (en
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 DE19722205594 priority Critical patent/DE2205594C/en
Priority claimed from DE19722205594 external-priority patent/DE2205594C/en
Publication of DE2205594B1 publication Critical patent/DE2205594B1/en
Publication of DE2205594A1 publication Critical patent/DE2205594A1/de
Application granted granted Critical
Publication of DE2205594C publication Critical patent/DE2205594C/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
DE19722205594 1972-02-07 Coal bit Expired DE2205594C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722205594 DE2205594C (en) 1972-02-07 Coal bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722205594 DE2205594C (en) 1972-02-07 Coal bit

Publications (3)

Publication Number Publication Date
DE2205594B1 DE2205594B1 (en) 1973-01-04
DE2205594A1 true DE2205594A1 (en) 1973-01-04
DE2205594C DE2205594C (en) 1973-08-02

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992020897A1 (en) 1991-05-23 1992-11-26 Brady William J Rotary mining tools
US5429199A (en) * 1992-08-26 1995-07-04 Kennametal Inc. Cutting bit and cutting insert

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992020897A1 (en) 1991-05-23 1992-11-26 Brady William J Rotary mining tools
US5180022A (en) * 1991-05-23 1993-01-19 Brady William J Rotary mining tools
US5303787A (en) * 1991-05-23 1994-04-19 Brady William J Rotary mining tools
US5429199A (en) * 1992-08-26 1995-07-04 Kennametal Inc. Cutting bit and cutting insert

Also Published As

Publication number Publication date
DE2205594B1 (en) 1973-01-04

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee