THE INVENTOR'S UNIVERSAL EDUCATOR. An Educational Cyclopaedia and Guide. For Inventors, Patentees, Manufacturers, Mechanics, and All Others Directly or Indirectly with Patents.
Washington, D.C. By the Author, 1911. Item #67900
143p, decorated cloth, illustrated, light wear to edges, good. Includes section on aviation.
Price: $12.50
See all items by Fred. G. Dieterich, compiler