CA284572A - Soupape de perforatrice a roc - Google Patents

Soupape de perforatrice a roc

Info

Publication number
CA284572A
CA284572A CA284572A CA284572DA CA284572A CA 284572 A CA284572 A CA 284572A CA 284572 A CA284572 A CA 284572A CA 284572D A CA284572D A CA 284572DA CA 284572 A CA284572 A CA 284572A
Authority
CA
Canada
Prior art keywords
valve
rock drills
drills
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
CA284572A
Other languages
English (en)
Inventor
Beam Lear Earl
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 CA284572A publication Critical patent/CA284572A/fr
Expired legal-status Critical Current

Links

CA284572A Soupape de perforatrice a roc Expired CA284572A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA284572T

Publications (1)

Publication Number Publication Date
CA284572A true CA284572A (fr) 1928-11-06

Family

ID=35217663

Family Applications (1)

Application Number Title Priority Date Filing Date
CA284572A Expired CA284572A (fr) Soupape de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA284572A (fr)

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