Granted Patent
Utility
US 6,050,039 · App. 09/034,736
Attic vent with a one-piece, fitted skeleton
Inventor:
Harry T. O'Hagin
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Mar 3, 1998
Inventor
Harry T. O'Hagin
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.