Granted Patent
Utility
US 6,067,129 · App. 08/616,264
Welding lens with integrated display and method
Inventor:
John D. Fergason
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Mar 15, 1996
Inventor
John D. Fergason
Assignee (at issue)
OSD Envizion, Inc.
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.