CA388540A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number: CA388540A
Authority: CA; Canada
Prior art keywords: rock drill; drill; rock
Prior art date: 1940-05-07
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

CA388540A

Other languages

English (en)

Inventor

C. Pearson Gustav

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.)

Gardner Denver Inc

Original Assignee

Gardner Denver Inc

Publication date

1940-05-07

1940-05-07 Application granted granted Critical

1940-05-07 Publication of CA388540A publication Critical patent/CA388540A/fr

Status Expired legal-status Critical Current

Links

239000011435 rock Substances 0.000 title 1

CA388540A Perforatrice a roc Expired CA388540A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA388540T

Publications (1)

Publication Number	Publication Date
CA388540A true CA388540A (fr)	1940-05-07

Family

ID=35393725

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA388540A Expired CA388540A (fr)			Perforatrice a roc

Country Status (1)

Country	Link
CA (1)	CA388540A (fr)

0
- CA CA388540A patent/CA388540A/fr not_active Expired

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