Granted Patent
Utility
US 6,019,156 · App. 09/072,844
Roll-up door
Inventors:
Donald A. Wagner, Tim Hornberger
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: May 5, 1998
Inventors
Donald A. Wagner
Tim Hornberger
Assignee (at issue)
Kelley Company, 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.