Granted Patent
Utility
US 6,672,362 · App. 09/710,253
Upward acting sectional door
Inventors:
Willis Jay Mullet, Gregory M. Rusnak
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Nov 10, 2000
Inventors
Willis Jay Mullet
Gregory M. Rusnak
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.