Granted Patent
Utility
US 5,319,821 · App. 07/864,624
Ceiling fan cleaning apparatus
Inventors:
Roy V. Nicholson, Gregory A. Harris, Darrell Merino, Robert W. Lackey
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Apr 7, 1992
Inventors
Roy V. Nicholson
Gregory A. Harris
Darrell Merino
Robert W. Lackey
Assignee (at issue)
R.L. Products 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.