CA293362A - Chape de l'avance de perforatrice a roc - Google Patents

Chape de l'avance de perforatrice a roc

Info

Publication number
CA293362A
CA293362A CA293362A CA293362DA CA293362A CA 293362 A CA293362 A CA 293362A CA 293362 A CA293362 A CA 293362A CA 293362D A CA293362D A CA 293362DA CA 293362 A CA293362 A CA 293362A
Authority
CA
Canada
Prior art keywords
drifters
feed shell
shell
feed
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
CA293362A
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 CA293362A publication Critical patent/CA293362A/fr
Expired legal-status Critical Current

Links

CA293362A Chape de l'avance de perforatrice a roc Expired CA293362A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA293362T

Publications (1)

Publication Number Publication Date
CA293362A true CA293362A (fr) 1929-09-24

Family

ID=35230681

Family Applications (1)

Application Number Title Priority Date Filing Date
CA293362A Expired CA293362A (fr) Chape de l'avance de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA293362A (fr)

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