TY - GEN A1 - Chao, Chen-Xiang A1 - Krüger, David T1 - Gear wheel Y1 - 2022 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/29657 UR - https://patents.google.com/patent/US20220316574A1/en?inventor=Chen-Xiang+Chao ER -