Granted Patent
Utility
US 4,613,804 · App. 06/752,865
Floor position sensing apparatus and method
Inventor:
Ronald R. Swenson
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Jul 8, 1985
Inventor
Ronald R. Swenson
Assignee (at issue)
Eaton-Kenway, Inc.
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.