CA568357A - Marteau perforateur du genre a deplacement positif - Google Patents

Marteau perforateur du genre a deplacement positif

Info

Publication number
CA568357A
CA568357A CA568357A CA568357DA CA568357A CA 568357 A CA568357 A CA 568357A CA 568357 A CA568357 A CA 568357A CA 568357D A CA568357D A CA 568357DA CA 568357 A CA568357 A CA 568357A
Authority
CA
Canada
Prior art keywords
positive displacement
hammer drill
type hammer
type
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
CA568357A
Other languages
English (en)
Inventor
A. Mori Ernest
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.)
Gulf Research and Development Co
Original Assignee
Gulf Research and Development Co
Publication date
Application granted granted Critical
Publication of CA568357A publication Critical patent/CA568357A/fr
Expired legal-status Critical Current

Links

CA568357A Marteau perforateur du genre a deplacement positif Expired CA568357A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA568357T

Publications (1)

Publication Number Publication Date
CA568357A true CA568357A (fr) 1958-12-30

Family

ID=35740887

Family Applications (1)

Application Number Title Priority Date Filing Date
CA568357A Expired CA568357A (fr) Marteau perforateur du genre a deplacement positif

Country Status (1)

Country Link
CA (1) CA568357A (fr)

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