Granted Patent
Utility
US 5,337,445 · App. 08/068,429
Vacuum fan duster
Inventors:
Gregory A. Harris, Roy V. Nicholson, Stephen R. Burns, Robert W. Lackey
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: May 27, 1993
Inventors
Gregory A. Harris
Roy V. Nicholson
Stephen R. Burns
Robert W. Lackey
Assignee (at issue)
Robert W. Lackey Corporation
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.