Granted Patent
Utility
US 6,274,249 · App. 08/928,668
Tool with tool body and protective layer system
Inventors:
Hans Braendle, Nobuhiko Shima
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Sep 12, 1997
Inventors
Hans Braendle
Nobuhiko Shima
Assignee (at issue)
Unaxis Balzers Aktiengesellschaft
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.