CA284179A - Hollow drill steel - Google Patents

Hollow drill steel

Info

Publication number
CA284179A
CA284179A CA284179A CA284179DA CA284179A CA 284179 A CA284179 A CA 284179A CA 284179 A CA284179 A CA 284179A CA 284179D A CA284179D A CA 284179DA CA 284179 A CA284179 A CA 284179A
Authority
CA
Canada
Prior art keywords
drill steel
hollow drill
hollow
steel
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
CA284179A
Other languages
French (fr)
Inventor
Pryce Leslie
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA284179A publication Critical patent/CA284179A/en
Expired legal-status Critical Current

Links

CA284179A Hollow drill steel Expired CA284179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA284179T

Publications (1)

Publication Number Publication Date
CA284179A true CA284179A (en) 1928-10-23

Family

ID=35217270

Family Applications (1)

Application Number Title Priority Date Filing Date
CA284179A Expired CA284179A (en) Hollow drill steel

Country Status (1)

Country Link
CA (1) CA284179A (en)

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