Granted Patent
Utility
US 5,129,441 · App. 07/660,683
Sectional doors and compressible flexible hinge assemblies
Inventors:
Alan R. Leist, Thomas E. Youtsey
Patented Case
View Patent ↗
Granted: Jul 14, 1992
Filed: Feb 25, 1991
Inventors
Alan R. Leist
Thomas E. Youtsey
Assignee (at issue)
Clopay Corporation
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.