Granted Patent
Utility
US 6,725,898 · App. 10/124,516
Insulated sectional door and method of construction
Inventors:
Willis Jay Mullet, Dewayne J. Davidson
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Apr 17, 2002
Inventors
Willis Jay Mullet
Dewayne J. Davidson
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.