EU Trademark Classification EU09 Scientific and electronic apparatus 微波激射器[微波放大器]（22891） Class 09 微波激射器[微波放大器] 22891 Chinese 微波激射器[微波放大器] English Masers [microwave amplifiers] Site ref. 22891 Class 09 Included in Harmonised Database (HDB), TM5 ID List