CA12086A - Perfectionnements aux machines a aerer les mines - Google Patents

Perfectionnements aux machines a aerer les mines

Info

Publication number
CA12086A
CA12086A CA000012086A CA12086DA CA12086A CA 12086 A CA12086 A CA 12086A CA 000012086 A CA000012086 A CA 000012086A CA 12086D A CA12086D A CA 12086DA CA 12086 A CA12086 A CA 12086A
Authority
CA
Canada
Prior art keywords
machines
ventilating mines
mines
ventilating
Prior art date
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
CA000012086A
Other languages
English (en)
Inventor
John H. Campbell
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
Application granted granted Critical
Publication of CA12086A publication Critical patent/CA12086A/fr
Expired legal-status Critical Current

Links

CA000012086A Perfectionnements aux machines a aerer les mines Expired CA12086A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA12086T

Publications (1)

Publication Number Publication Date
CA12086A true CA12086A (fr) 1880-12-06

Family

ID=45128632

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000012086A Expired CA12086A (fr) Perfectionnements aux machines a aerer les mines

Country Status (1)

Country Link
CA (1) CA12086A (fr)

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