Bei Du

City:

Beijing

Country:

China

Published Applications:

Last publication date:

2008-01-24

Top Assignees for applications by Bei Du

The entities that hold a legal rights for patent applications filed by inventor Du Bei:

Bei Du from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

METHOD AND SYSTEM FOR INTERNATIONAL ROAMING USING VIRTUAL SIM CARD

InventorID:

4102173 ⎘