Granted Patent
Utility
US 6,769,515 · App. 10/346,628
Multi-fold collapsible ladder
Inventors:
Luke Hillebrecht, Paul K. Meeker, William R. Gibson
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Jan 17, 2003
Inventors
Luke Hillebrecht
Paul K. Meeker
William R. Gibson
Assignee (at issue)
Cosco Management, 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.