Granted Patent
Utility
US 5,771,532 · App. 08/547,566
Suction sweeping machine
Inventor:
Peter Alexander Clarence Munnoch
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Oct 24, 1995
Inventor
Peter Alexander Clarence Munnoch
Assignee (at issue)
Applied Sweepers 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.