CA139663A - Machine a miner le charbon - Google Patents

Machine a miner le charbon

Info

Publication number: CA139663A
Authority: CA; Canada
Prior art keywords: coal mining; mining machine; coal; machine; mining
Prior art date: 1911-11-18
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

CA000139663A

Other languages

English (en)

Inventor

Elmer Hough

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

Priority date (The priority date 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 date listed.)

1911-11-18

Filing date

1911-11-18

Publication date

1912-04-09

1911-11-18 Application filed by Individual filed Critical Individual

1912-04-09 Application granted granted Critical

1912-04-09 Publication of CA139663A publication Critical patent/CA139663A/fr

Status Expired legal-status Critical Current

Links

239000003245 coal Substances 0.000 title 1
238000005065 mining Methods 0.000 title 1

CA000139663A 1911-11-18 1911-11-18 Machine a miner le charbon Expired CA139663A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA139663T		1911-11-18

Publications (1)

Publication Number	Publication Date
CA139663A true CA139663A (fr)	1912-04-09

Family

ID=45259379

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000139663A Expired CA139663A (fr)	1911-11-18	1911-11-18	Machine a miner le charbon

Country Status (1)

Country	Link
CA (1)	CA139663A (fr)

1911
- 1911-11-18 CA CA000139663A patent/CA139663A/fr not_active Expired

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