首页>
外国专利>
Use of the method for the production of electrons with a bending gefaesskolben made of metal according to the german patent no. 676727 bending to electrons with a ceramic gefaesskolben
Use of the method for the production of electrons with a bending gefaesskolben made of metal according to the german patent no. 676727 bending to electrons with a ceramic gefaesskolben