CA220276A - Foret a roc - Google Patents

Foret a roc

Info

Publication number: CA220276A
Authority: CA; Canada
Prior art keywords: rock drill; drill; rock
Prior art date: 1922-06-27
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

CA220276A

Other languages

English (en)

Inventor

Henry Swicher William

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

1922-06-27

1922-06-27 Application granted granted Critical

1922-06-27 Publication of CA220276A publication Critical patent/CA220276A/fr

Status Expired legal-status Critical Current

Links

239000011435 rock Substances 0.000 title 1

CA220276A Foret a roc Expired CA220276A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA220276T

Publications (1)

Publication Number	Publication Date
CA220276A true CA220276A (fr)	1922-06-27

Family

ID=35114720

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA220276A Expired CA220276A (fr)			Foret a roc

Country Status (1)

Country	Link
CA (1)	CA220276A (fr)

0
- CA CA220276A patent/CA220276A/fr not_active Expired

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