Granted Patent
Utility
US 4,227,546 · App. 05/939,994
Dishwasher fluid control system
Inventor:
Richard P. Bergeson
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Sep 6, 1978
Inventor
Richard P. Bergeson
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.