A 1939 30Th Celebration For The Invention Of The “German X-Ray” Badge certificate_of_authenticity Footnote: Richard August "Knobby" Knobloch

Footnote: Richard August "Knobby" Knobloch (May 27

his citation stating: "The President of the United States of America takes pleasure in presenting the Navy Cross to Lieutenant Commander [then Lieutenant] Kent Manning Cushman

One hundred and seventeen miners became unemployed almost immediately after the explosion

He was discharged from the regiment on 19th September 1816 at age 24

These personal details were reviewed and stamped by an Oberleutnant of the appointment staff

A 1939 30Th Celebration For The Invention Of The “German X-Ray” Badge certificate_of_authenticity Footnote: Richard August "Knobby" KnoblochA 1939 30. Deutsche Tagung des Deutschen Rntgens Stuttgart badge (May. 1939); in zink; horizontal pinback; unmarked; measuring 43 mm x 27 mm; very fine condition. Footnote: Wilhelm Conrad Rngten (March 27, 1845 February 10, 1923) was a German mechanical engineer and physicist who was the first individual to produce x rays on November 8th, 1895, when he produced and detected electromagnetic radiation. In German, X Rays are named Rntgen.