The U. S. patent system
By: by John A. Dienner.  A series of three lectures presented to the members of the Chicago chapter of the American Society for Metals during the year 1939.
Contributors: American Society for Metals.
Published: 1940
Place of publication: Chicago, Ill
Language: eng
Number of pages: 73
Subjects: Patents -- United States.
Notes: Bibliography: p.70-71.
"Copyright ... by the American Society for Metals."