0145421-A2 is referenced by 18 patents and cites 4 patents.

Title
Improvements in or relating to the manufacture of rotary drill bits.
Application Number
EP19840308321 19841130
Publication Number
0145421 (A2)
Application Date
November 30, 1984
Publication Date
June 19, 1985
Inventor
Barr John Denzil
Assignee
Nl Petroleum Prod
GB
IPC
E21B 10/46
B22F 07/06
E21B 10/46
B22F 07/06
E21B 10/567
E21B 10/56
B22F 07/06
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