AT116449B - Kohlen- und Gesteinsbohrmaschine. - Google Patents

Kohlen- und Gesteinsbohrmaschine.

Info

Publication number
AT116449B
AT116449B AT116449DA AT116449B AT 116449 B AT116449 B AT 116449B AT 116449D A AT116449D A AT 116449DA AT 116449 B AT116449 B AT 116449B
Authority
AT
Austria
Prior art keywords
coal
drilling machine
rock drilling
rock
machine
Prior art date
Application number
Other languages
English (en)
Original Assignee
Jeffrey Mfg Co
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 Jeffrey Mfg Co filed Critical Jeffrey Mfg Co
Application granted granted Critical
Publication of AT116449B publication Critical patent/AT116449B/de

Links

AT116449D 1927-11-18 1928-10-08 Kohlen- und Gesteinsbohrmaschine. AT116449B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US116449XA 1927-11-18 1927-11-18

Publications (1)

Publication Number Publication Date
AT116449B true AT116449B (de) 1930-02-25

Family

ID=21751357

Family Applications (1)

Application Number Title Priority Date Filing Date
AT116449D AT116449B (de) 1927-11-18 1928-10-08 Kohlen- und Gesteinsbohrmaschine.

Country Status (1)

Country Link
AT (1) AT116449B (de)

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