Granted Patent
Utility
US 4,410,491 · App. 06/331,065
Material for electrical contacts
Inventors:
Bohm Wolfgang, Roger Wolmer, Willi Malikowski
Patented Case
View Patent ↗
Granted: Oct 18, 1983
Filed: Dec 15, 1981
Inventors
Bohm Wolfgang
Roger Wolmer
Willi Malikowski
Assignee (at issue)
Degussa AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.