Granted Patent
Utility
US 5,566,740 · App. 08/423,894
Sectional overhead door
Inventors:
Willis Jay Mullet, Albert W. Mitchell
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Apr 18, 1995
Inventors
Willis Jay Mullet
Albert W. Mitchell
Assignee (at issue)
Wayne-Dalton Corp.
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.