Graz
Austria
2
2007-02-08
The entities that hold a legal rights for patent applications filed by inventor Kehrer Oskar:
Oskar Kehrer from Graz, AT has applied for patents for these inventions. The list has both pending applications and granted patents:
Method for the plasma, laser or electron beam welding of identical or different materials with a tendency for excessive hardening, with copper or a copper alloy as a filler material
#2 | 2006-11-21Shaft comprising a part connected thereto by welding
4350191 ⎘