Meerane
Germany
2
2011-02-03
The entities that hold a legal rights for patent applications filed by inventor Graupner Dirk:
Dirk Graupner from Meerane, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Protective switching device for monitoring the electrical current flow to an electrical user and method for monitoring the electrical current flow to an electrical user by way of a protective switching device
#2 | 2009-01-08Sensor unit with safety system
3337443 ⎘