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Meiden completes development of cold-cathode X-ray tube using carbon nanostructures for downsizing X-ray inspection system | Until 2020 | MEIDENSHA CORPORATION
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Pressler (possibly Schilling) Cold Cathode X-Ray Tube (ca. 1910-1915) | Museum of Radiation and Radioactivity
![Cold Cathode Tube Alphabet - Letters Q-T Stock Illustration - Illustration of digit, light: 226434760 Cold Cathode Tube Alphabet - Letters Q-T Stock Illustration - Illustration of digit, light: 226434760](https://thumbs.dreamstime.com/z/cold-cathode-tube-alphabet-letters-q-t-d-rendering-226434760.jpg)
Cold Cathode Tube Alphabet - Letters Q-T Stock Illustration - Illustration of digit, light: 226434760
![File:Vintage Raytheon Type BH Vacuum Tube, Full-Wave Cold-Cathode-Rectifier, Developed For Use In B Battery Eliminators For Radio Receivers, Made in USA, Circa 1925 (35662423753).jpg - Wikimedia Commons File:Vintage Raytheon Type BH Vacuum Tube, Full-Wave Cold-Cathode-Rectifier, Developed For Use In B Battery Eliminators For Radio Receivers, Made in USA, Circa 1925 (35662423753).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/b/b4/Vintage_Raytheon_Type_BH_Vacuum_Tube%2C_Full-Wave_Cold-Cathode-Rectifier%2C_Developed_For_Use_In_B_Battery_Eliminators_For_Radio_Receivers%2C_Made_in_USA%2C_Circa_1925_%2835662423753%29.jpg)