CA29478A - Machine a percer le charbon et la pierre - Google Patents

Machine a percer le charbon et la pierre

Info

Publication number: CA29478A
Authority: CA; Canada
Prior art keywords: coal; drilling machine; stone drilling; stone; machine
Prior art date: 1888-07-10
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

CA000029478A

Other languages

English (en)

Inventor

James T. Johnson

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

1888-07-10

1888-07-10 Application granted granted Critical

1888-07-10 Publication of CA29478A publication Critical patent/CA29478A/fr

Status Expired legal-status Critical Current

Links

239000003245 coal Substances 0.000 title 1
238000005553 drilling Methods 0.000 title 1
239000004575 stone Substances 0.000 title 1

CA000029478A Machine a percer le charbon et la pierre Expired CA29478A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA29478T

Publications (1)

Publication Number	Publication Date
CA29478A true CA29478A (fr)	1888-07-10

Family

ID=45146019

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000029478A Expired CA29478A (fr)			Machine a percer le charbon et la pierre

Country Status (1)

Country	Link
CA (1)	CA29478A (fr)

0
- CA CA000029478A patent/CA29478A/fr not_active Expired

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