Granted Patent
Utility
US 4,289,154 · App. 06/098,601
Self-cleaning float mechanism
Inventor:
Lawrence L. Quayle
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Nov 29, 1979
Inventor
Lawrence L. Quayle
Assignee (at issue)
Maytag 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.