Granted Patent
Utility
US 6,189,867 · App. 09/177,498
Load-handling device
Inventors:
Michael J. O'Rourke, Thomas E. Coffman
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Oct 23, 1998
Inventors
Michael J. O'Rourke
Thomas E. Coffman
Assignee (at issue)
Surety Manufacturing & Testing Ltd.
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.