Granted Patent
Utility
US 5,143,513 · App. 07/612,800
Dishwasher pump
Inventors:
David I. Ellingson, Herbert E. Scott, James Ernest Sparks
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Nov 14, 1990
Inventors
David I. Ellingson
Herbert E. Scott
James Ernest Sparks
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.