CA302582A - Tiroir de perforatrice a roc - Google Patents

Tiroir de perforatrice a roc

Info

Publication number
CA302582A
CA302582A CA302582A CA302582DA CA302582A CA 302582 A CA302582 A CA 302582A CA 302582 A CA302582 A CA 302582A CA 302582D A CA302582D A CA 302582DA CA 302582 A CA302582 A CA 302582A
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
CA302582A
Other languages
English (en)
Inventor
William Augustus Smith, Sr.
William Arthur Smith, Jr.
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 CA302582A publication Critical patent/CA302582A/fr
Expired legal-status Critical Current

Links

CA302582A Tiroir de perforatrice a roc Expired CA302582A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA302582T

Publications (1)

Publication Number Publication Date
CA302582A true CA302582A (fr) 1930-07-29

Family

ID=35255728

Family Applications (1)

Application Number Title Priority Date Filing Date
CA302582A Expired CA302582A (fr) Tiroir de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA302582A (fr)

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