CA224080A - Appareil de foret a roc - Google Patents

Appareil de foret a roc

Info

Publication number: CA224080A
Authority: CA; Canada
Prior art keywords: drilling apparatus; rock drilling; rock; drilling
Prior art date: 1922-09-26
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

CA224080A

Other languages

English (en)

Inventor

Hanson James

Greenwood Hanson Richard

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.)

Individual

Original Assignee

Individual

Publication date

1922-09-26

1922-09-26 Application granted granted Critical

1922-09-26 Publication of CA224080A publication Critical patent/CA224080A/fr

Status Expired legal-status Critical Current

Links

238000005553 drilling Methods 0.000 title 1
239000011435 rock Substances 0.000 title 1

CA224080A Appareil de foret a roc Expired CA224080A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA224080T

Publications (1)

Publication Number	Publication Date
CA224080A true CA224080A (fr)	1922-09-26

Family

ID=35119683

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA224080A Expired CA224080A (fr)			Appareil de foret a roc

Country Status (1)

Country	Link
CA (1)	CA224080A (fr)

0
- CA CA224080A patent/CA224080A/fr not_active Expired

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