CA303220A - Mecanisme du mandrin de perforatrice a roc - Google Patents

Mecanisme du mandrin de perforatrice a roc

Info

Publication number
CA303220A
CA303220A CA303220A CA303220DA CA303220A CA 303220 A CA303220 A CA 303220A CA 303220 A CA303220 A CA 303220A CA 303220D A CA303220D A CA 303220DA CA 303220 A CA303220 A CA 303220A
Authority
CA
Canada
Prior art keywords
chuck mechanism
rock drills
drills
rock
chuck
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
CA303220A
Other languages
English (en)
Inventor
Christopher Hansen Charles
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 CA303220A publication Critical patent/CA303220A/fr
Expired legal-status Critical Current

Links

CA303220A Mecanisme du mandrin de perforatrice a roc Expired CA303220A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA303220T

Publications (1)

Publication Number Publication Date
CA303220A true CA303220A (fr) 1930-08-19

Family

ID=35256366

Family Applications (1)

Application Number Title Priority Date Filing Date
CA303220A Expired CA303220A (fr) Mecanisme du mandrin de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA303220A (fr)

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