Granted Patent
Utility
US 6,070,264 · App. 09/289,257
Welding helmet having auto-darkening and manually adjustable lens shade control
Inventors:
Thomas J. Hamilton, Steven F. Kickham, Jerry C. Cole, David Allen Shamery
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Apr 9, 1999
Inventors
Thomas J. Hamilton
Steven F. Kickham
Jerry C. Cole
David Allen Shamery
Assignee (at issue)
Jackson Products, 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.