CA176557A - Appareil de porte de mine - Google Patents

Appareil de porte de mine

Info

Publication number
CA176557A
CA176557A CA000176557A CA176557DA CA176557A CA 176557 A CA176557 A CA 176557A CA 000176557 A CA000176557 A CA 000176557A CA 176557D A CA176557D A CA 176557DA CA 176557 A CA176557 A CA 176557A
Authority
CA
Canada
Prior art keywords
door apparatus
mine door
mine
door
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
CA000176557A
Other languages
English (en)
Inventor
William Martin Hummel
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 CA176557A publication Critical patent/CA176557A/fr
Expired legal-status Critical Current

Links

CA000176557A 1916-12-18 1916-12-18 Appareil de porte de mine Expired CA176557A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA176557T 1916-12-18

Publications (1)

Publication Number Publication Date
CA176557A true CA176557A (fr) 1917-04-24

Family

ID=45296210

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000176557A Expired CA176557A (fr) 1916-12-18 1916-12-18 Appareil de porte de mine

Country Status (1)

Country Link
CA (1) CA176557A (fr)

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