Granted Patent
Utility
US 4,677,291 · App. 06/797,689
Analysis of rotational eccentricity
Inventor:
David I. Ellingson
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Nov 13, 1985
Inventor
David I. Ellingson
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.