CA401173A - Dispositif amortisseur de perforatrice a roc - Google Patents

Dispositif amortisseur de perforatrice a roc

Info

Publication number
CA401173A
CA401173A CA401173A CA401173DA CA401173A CA 401173 A CA401173 A CA 401173A CA 401173 A CA401173 A CA 401173A CA 401173D A CA401173D A CA 401173DA CA 401173 A CA401173 A CA 401173A
Authority
CA
Canada
Prior art keywords
rock drill
cushioning device
cushioning
drill
rock
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
CA401173A
Other languages
English (en)
Inventor
Reuben Mack Albert
Andrew Morrison William
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
Publication date
Application granted granted Critical
Publication of CA401173A publication Critical patent/CA401173A/fr
Expired legal-status Critical Current

Links

CA401173A Dispositif amortisseur de perforatrice a roc Expired CA401173A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA401173T

Publications (1)

Publication Number Publication Date
CA401173A true CA401173A (fr) 1941-12-02

Family

ID=35411619

Family Applications (1)

Application Number Title Priority Date Filing Date
CA401173A Expired CA401173A (fr) Dispositif amortisseur de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA401173A (fr)

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