Apparatus for boring wells and the like
United States Patent 1681094

Inventors:
Alcunovitch, Capeliuschnicoff M.
Publication Date:
08/14/1928
View Patent Images:
Download PDF 1681094 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Alcunovitch, Capeliuschnicoff M.
Primary Class:
175/106
Other Classes:
415/185, 175/107, 175/103, 175/216
International Classes:
E21B4/00; E21B4/02