CA631880A - Metal drilling - Google Patents

Metal drilling

Info

Publication number
CA631880A
CA631880A CA631880A CA631880DA CA631880A CA 631880 A CA631880 A CA 631880A CA 631880 A CA631880 A CA 631880A CA 631880D A CA631880D A CA 631880DA CA 631880 A CA631880 A CA 631880A
Authority
CA
Canada
Prior art keywords
metal drilling
drilling
metal
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
CA631880A
Inventor
E. Martin Earnest
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.)
RALPH W WALSH
Original Assignee
RALPH W WALSH
Publication date
Application granted granted Critical
Publication of CA631880A publication Critical patent/CA631880A/en
Expired legal-status Critical Current

Links

CA631880A Metal drilling Expired CA631880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA631880T

Publications (1)

Publication Number Publication Date
CA631880A true CA631880A (en) 1961-11-28

Family

ID=35888025

Family Applications (1)

Application Number Title Priority Date Filing Date
CA631880A Expired CA631880A (en) Metal drilling

Country Status (1)

Country Link
CA (1) CA631880A (en)

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