Granted Patent
Utility
US 6,425,705 · App. 09/836,930
Ratchet mechanism for connecting a cleaning head to a handle
Inventor:
Vicki Ingram
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: Apr 18, 2001
Inventor
Vicki Ingram
Assignee (at issue)
Hopkins Manufacturing 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.