Granted Patent
Utility
US 5,921,308 · App. 08/858,525
Barricade apparatus and method for a joint in a sectional door
Inventor:
David Martin
Patented Case
View Patent ↗
Granted: Jul 13, 1999
Filed: May 19, 1997
Inventor
David Martin
Assignee (at issue)
Martin Door Manufacturing, 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.