Title:
Machine for driving slopes and air courses in mines
Document Type and Number:
United States Patent 2384397


Inventors:
Erskine, Ramsay
      Plaque It!

Publication Date:
09/04/1945
View Patent Images:
Images are available in PDF form when logged in. To view PDFs, Login  or  Create Account (Free!)
Export Citation:
Click for automatic bibliography generation
Assignee:
Erskine, Ramsay
Primary Class:
299/60
Other Classes:
175/391, 175/94, 175/319
International Classes:
E21D9/10