Granted Patent
Utility
US 4,998,991 · App. 07/444,533
Materials handling equipment
Inventor:
Barrie Armstrong Poulton
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Dec 1, 1989
Inventor
Barrie Armstrong Poulton
Assignee (at issue)
Flomat Limited
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.