CA489435A - Appareil a percer - Google Patents

Appareil a percer

Info

Publication number
CA489435A
CA489435A CA489435A CA489435DA CA489435A CA 489435 A CA489435 A CA 489435A CA 489435 A CA489435 A CA 489435A CA 489435D A CA489435D A CA 489435DA CA 489435 A CA489435 A CA 489435A
Authority
CA
Canada
Prior art keywords
drilling apparatus
drilling
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
CA489435A
Other languages
English (en)
Inventor
Anthony Mccallum Robert
Original Assignee
Joy Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA489435A publication Critical patent/CA489435A/fr
Expired legal-status Critical Current

Links

CA489435A Appareil a percer Expired CA489435A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA489435T

Publications (1)

Publication Number Publication Date
CA489435A true CA489435A (fr) 1953-01-06

Family

ID=35629163

Family Applications (1)

Application Number Title Priority Date Filing Date
CA489435A Expired CA489435A (fr) Appareil a percer

Country Status (1)

Country Link
CA (1) CA489435A (fr)

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