Granted Patent
Utility
US 5,861,167 · App. 08/809,237
Surface etching
Inventors:
Sven Lindskog, Leif Blomlof
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: May 12, 1997
Inventors
Sven Lindskog
Leif Blomlof
Assignee (at issue)
Biora AB
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.