FI892349A - Poranterä - Google Patents

Poranterä Download PDF

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Publication number
FI892349A
FI892349A FI892349A FI892349A FI892349A FI 892349 A FI892349 A FI 892349A FI 892349 A FI892349 A FI 892349A FI 892349 A FI892349 A FI 892349A FI 892349 A FI892349 A FI 892349A
Authority
FI
Finland
Prior art keywords
bodies
drill bit
tough
insert
less
Prior art date
Application number
FI892349A
Other languages
English (en)
Swedish (sv)
Other versions
FI892349A0 (fi
FI93385C (fi
FI93385B (fi
Inventor
Donald S Stroud
Original Assignee
American National Carbide Comp
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 by American National Carbide Comp filed Critical American National Carbide Comp
Priority to FI892349A priority Critical patent/FI93385C/fi
Publication of FI892349A0 publication Critical patent/FI892349A0/fi
Publication of FI892349A publication Critical patent/FI892349A/fi
Application granted granted Critical
Publication of FI93385B publication Critical patent/FI93385B/fi
Publication of FI93385C publication Critical patent/FI93385C/fi

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Landscapes

  • Polishing Bodies And Polishing Tools (AREA)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
FI892349A 1989-05-16 1989-05-16 Poranterä FI93385C (fi)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI892349A FI93385C (fi) 1989-05-16 1989-05-16 Poranterä

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI892349A FI93385C (fi) 1989-05-16 1989-05-16 Poranterä
FI892349 1989-05-16

Publications (4)

Publication Number Publication Date
FI892349A0 FI892349A0 (fi) 1989-05-16
FI892349A true FI892349A (fi) 1990-11-17
FI93385B FI93385B (fi) 1994-12-15
FI93385C FI93385C (fi) 1995-03-27

Family

ID=8528435

Family Applications (1)

Application Number Title Priority Date Filing Date
FI892349A FI93385C (fi) 1989-05-16 1989-05-16 Poranterä

Country Status (1)

Country Link
FI (1) FI93385C (fi)

Also Published As

Publication number Publication date
FI892349A0 (fi) 1989-05-16
FI93385C (fi) 1995-03-27
FI93385B (fi) 1994-12-15

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Legal Events

Date Code Title Description
BB Publication of examined application
MM Patent lapsed
MM Patent lapsed

Owner name: AMERICAN NATIONAL CARBIDE COMPANY