Graz
Austria
3
2021-09-09
Peter Pertl from Graz, AT has applied for patents for these inventions. The list has both pending applications and granted patents:
COMPOSITE MATERIAL FOR PRODUCING AN ACOUSTIC MEMBRANE
ACOUSTIC MEMBRANE
METHOD FOR PRODUCING A FILM FOR A LOUDSPEAKER DIAPHRAGM OR A MICROPHONE DIAPHRAGM
1621585 ⎘