Inventor

PROTZER HELMUT

DE2 patents

⚠️ This page may combine multiple inventors who share the name “PROTZER HELMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KM EUROPA METAL AG

1 patent

US5714052AFeb 3, 1998

Method for producing brochantite patina on copper

KM EUROPA METAL AG8 citations66

KABELMETAL AG

1 patent

US5282890AFeb 1, 1994

Process for producing brown covering layers on copper

KABELMETAL AG6 citations51