Granted Patent
Utility
US 6,255,267 · App. 08/610,454
Manual toilet bowl cleaner
Inventors:
Bala Chandran Nayar, Ronnie A. Carroll, Kenneth Ward
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Mar 4, 1996
Inventors
Bala Chandran Nayar
Ronnie A. Carroll
Kenneth Ward
Assignee (at issue)
HPD Laboratories, Inc.
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.