CA514090A - Method and apparatus for case hardening drill rods - Google Patents

Method and apparatus for case hardening drill rods

Info

Publication number
CA514090A
CA514090A CA514090A CA514090DA CA514090A CA 514090 A CA514090 A CA 514090A CA 514090 A CA514090 A CA 514090A CA 514090D A CA514090D A CA 514090DA CA 514090 A CA514090 A CA 514090A
Authority
CA
Canada
Prior art keywords
drill rods
case hardening
hardening
case
drill
Prior art date
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.)
Expired
Application number
CA514090A
Other languages
French (fr)
Inventor
H. Davis Roy
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.)
Atlas Steels Ltd
Original Assignee
Atlas Steels Ltd
Publication date
Application granted granted Critical
Publication of CA514090A publication Critical patent/CA514090A/en
Expired legal-status Critical Current

Links

CA514090A Method and apparatus for case hardening drill rods Expired CA514090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA514090T

Publications (1)

Publication Number Publication Date
CA514090A true CA514090A (en) 1955-06-28

Family

ID=35665175

Family Applications (1)

Application Number Title Priority Date Filing Date
CA514090A Expired CA514090A (en) Method and apparatus for case hardening drill rods

Country Status (1)

Country Link
CA (1) CA514090A (en)

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