CA21416A - Foret de mine - Google Patents

Foret de mine

Info

Publication number: CA21416A
Authority: CA; Canada
Prior art keywords: rock drill; drill; rock
Prior art date: 1885-04-14
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

CA000021416A

Other languages

English (en)

Inventor

George A. Hoffnagle

Frederick W. Coe

George A. Miller

Charles H. Miller

James Mitchell

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

1885-04-14

1885-04-14 Application granted granted Critical

1885-04-14 Publication of CA21416A publication Critical patent/CA21416A/fr

Status Expired legal-status Critical Current

Links

239000011435 rock Substances 0.000 title 1

CA000021416A Foret de mine Expired CA21416A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA21416T

Publications (1)

Publication Number	Publication Date
CA21416A true CA21416A (fr)	1885-04-14

Family

ID=45137959

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000021416A Expired CA21416A (fr)			Foret de mine

Country Status (1)

Country	Link
CA (1)	CA21416A (fr)

0
- CA CA000021416A patent/CA21416A/fr not_active Expired

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