CA288285A - Tiroir de perforatrice a roc - Google Patents

Tiroir de perforatrice a roc

Info

Publication number: CA288285A
Authority: CA; Canada
Prior art keywords: rock drill; drill valve; valve; rock; drill
Prior art date: 1929-03-26
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

CA288285A

Other languages

English (en)

Inventor

William Hulshizer George

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.)

Ingersoll Rand Co

Original Assignee

Ingersoll Rand Co

Publication date

1929-03-26

1929-03-26 Application granted granted Critical

1929-03-26 Publication of CA288285A publication Critical patent/CA288285A/fr

Status Expired legal-status Critical Current

Links

239000011435 rock Substances 0.000 title 1

CA288285A Tiroir de perforatrice a roc Expired CA288285A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA288285T

Publications (1)

Publication Number	Publication Date
CA288285A true CA288285A (fr)	1929-03-26

Family

ID=35225097

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA288285A Expired CA288285A (fr)			Tiroir de perforatrice a roc

Country Status (1)

Country	Link
CA (1)	CA288285A (fr)

0
- CA CA288285A patent/CA288285A/fr not_active Expired

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