Granted Patent
Utility
US 6,588,775 · App. 10/000,536
Convertible hand cart with improved locking means
Inventor:
William E. Malone, Jr.
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Oct 23, 2001
Inventor
William E. Malone, Jr.
Assignee (at issue)
Gleason Industrial 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.