Title:
X-ray observation apparatus
United States Patent 1961713
Inventors:
Simjian, Luther G.
Application Number:
US59919032A
Publication Date:
06/05/1934
Filing Date:
03/16/1932
Assignee:
Simjian, Luther G.
Primary Class:
Other Classes:
250/214VT, 378/98.2, 378/146
International Classes:
G02B27/02
View Patent Images: