CA88728A - Machine a forer la pierre, etc. - Google Patents

Machine a forer la pierre, etc.

Info

Publication number
CA88728A
CA88728A CA000088728A CA88728DA CA88728A CA 88728 A CA88728 A CA 88728A CA 000088728 A CA000088728 A CA 000088728A CA 88728D A CA88728D A CA 88728DA CA 88728 A CA88728 A CA 88728A
Authority
CA
Canada
Prior art keywords
ironstone
coal
boring machine
boring
machine
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
CA000088728A
Other languages
English (en)
Inventor
John Thomas Blackett
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA88728A publication Critical patent/CA88728A/fr
Expired legal-status Critical Current

Links

CA000088728A 1903-12-21 1903-12-21 Machine a forer la pierre, etc. Expired CA88728A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA88728T 1903-12-21

Publications (1)

Publication Number Publication Date
CA88728A true CA88728A (fr) 1904-08-09

Family

ID=45205263

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000088728A Expired CA88728A (fr) 1903-12-21 1903-12-21 Machine a forer la pierre, etc.

Country Status (1)

Country Link
CA (1) CA88728A (fr)

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