Granted Patent
Utility
US 6,123,139 · App. 09/142,995
Overhead rigid-panel door
Inventors:
Walenty Kalempa, Joe Delgado
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Sep 14, 1998
Inventors
Walenty Kalempa
Joe Delgado
Assignee (at issue)
Rytec 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.