CA20888A - Support pour forets de mine - Google Patents

Support pour forets de mine

Info

Publication number: CA20888A
Authority: CA; Canada
Prior art keywords: support; rock drills; drills; rock
Prior art date: 1885-01-16
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

CA000020888A

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

1885-01-16

1885-01-16 Application granted granted Critical

1885-01-16 Publication of CA20888A publication Critical patent/CA20888A/fr

Status Expired legal-status Critical Current

Links

239000011435 rock Substances 0.000 title 1

CA000020888A Support pour forets de mine Expired CA20888A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA20888T

Publications (1)

Publication Number	Publication Date
CA20888A true CA20888A (fr)	1885-01-16

Family

ID=45137431

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000020888A Expired CA20888A (fr)			Support pour forets de mine

Country Status (1)

Country	Link
CA (1)	CA20888A (fr)

0
- CA CA000020888A patent/CA20888A/fr not_active Expired

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