Granted Patent
Utility
US 6,178,700 · App. 09/359,600
Door frame reinforcing structure
Inventor:
Frédéric Mayer
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Jul 23, 1999
Inventor
Frédéric Mayer
Assignee (at issue)
Alabama Metal Industries Corporation
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.