Inventor
SHEN XUE SONG
CN3 patents
Patents
3 patentsUS9666039B2May 30, 2017
Visual notification device and driving method thereof
SIEMENS SCHWEIZ AG1 citations40
US11297401B2Apr 5, 2022
Method for testing a plurality of notification appliances connected to a bus system and notification appliance for conducting the test
SIEMENS SCHWEIZ AG0 citations38
US10540885B2Jan 21, 2020
Fire alarm systems
SIEMENS SCHWEIZ AG0 citations31