Granted Patent
Utility
US 5,937,477 · App. 08/875,430
Vacuum cleaner
Inventor:
James Dyson
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Sep 30, 1997
Inventor
James Dyson
Assignee (at issue)
Notetry 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.