Granted Patent
Utility
US 4,845,988 · App. 07/152,876
Accelerometer having a permanent magnet with non-magnetic end members
Inventors:
Michael K. Russell, Kenneth S. Evans
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Feb 5, 1988
Inventors
Michael K. Russell
Kenneth S. Evans
Assignee (at issue)
Baroid Technology, 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.