CA20953A - Foret de mine - Google Patents

Foret de mine

Info

Publication number: CA20953A
Authority: CA; Canada
Prior art keywords: rock drill; drill; rock
Prior art date: 1885-01-23
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

CA000020953A

Other languages

English (en)

Inventor

Charles S. Westbrook

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

1885-01-23

1885-01-23 Application granted granted Critical

1885-01-23 Publication of CA20953A publication Critical patent/CA20953A/fr

Status Expired legal-status Critical Current

Links

239000011435 rock Substances 0.000 title 1

CA000020953A Foret de mine Expired CA20953A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA20953T

Publications (1)

Publication Number	Publication Date
CA20953A true CA20953A (fr)	1885-01-23

Family

ID=45137496

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000020953A Expired CA20953A (fr)			Foret de mine

Country Status (1)

Country	Link
CA (1)	CA20953A (fr)

0
- CA CA000020953A patent/CA20953A/fr not_active Expired

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