Granted Patent
Utility
US 6,031,439 · App. 08/969,931
Bi-directional hall-effect control device
Inventors:
David V. Adams, Thomas G. Cooper, Alan W. Petersen, Karl Konecny
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Nov 28, 1997
Inventors
David V. Adams
Thomas G. Cooper
Alan W. Petersen
Karl Konecny
Assignee (at issue)
ACUSON
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.