Granted Patent
Utility
US 6,138,846 · App. 09/042,934
Adjustable expansible load lifting device
Inventor:
James A. Baumann
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Mar 17, 1998
Inventor
James A. Baumann
Assignee (at issue)
MI-JACK PRODUCTS, 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.