Berlin
Germany
3
2010-02-25
The entities that hold a legal rights for patent applications filed by inventor Steinfeld Kai:
Kai Steinfeld from Berlin, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Disconnecting switch device and method for production of a disconnecting switch device
#2 | 2006-10-10Surge voltage protector for use in power transmission networks
#3 | 2006-09-14Device for monitoring the leakage current of a surge arrester
3759665 ⎘