GENEVA, June 17 -- CANON ELECTRON TUBES & DEVICES CO., LTD. (1385, Shimoishigami, Otawara-shi, Tochigi3240036), キヤノン電子管デバイス株式会社 (栃木県大田原市下石上１３８５番地) filed a patent application (PCT/JP2024/042131) for "EMITTER STRUCTURE AND ELECTRON GUN" on Nov 28, 2024. With publication no. WO/2025/121240, the details related to the patent application was published on Jun 12, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organiza...