STEP 17 - I brevetti

US583956, apparecchio per produzione di immagini stereoscopiche, Elihu Thomson, 1897

US1203495A, tubo di Coolidge, William D. Coolidge, 1916

US2539102A, apparecchio radiografico per ispezioni, Russell G. Rhoades, 1946

US2957987A, Metodo per determinare lo spessore del metallo, Arnesen Tore, 1958

Fonti:

https://patents.google.com/patent/US583956?oq=rontgen

https://patents.google.com/patent/US720599?oq=rontgen

https://patents.google.com/patent/US1203495?oq=rontgen

https://patents.google.com/patent/US2396069?oq=nondestructive+testing+x+ray

https://patents.google.com/patent/US2539102?oq=nondestructive+testing+x+ray

https://patents.google.com/patent/US2957987?oq=nondestructive+testing+x+ray