Granted Patent
Utility
US 5,817,939 · App. 08/710,757
Proof mass support and sensing system
Inventors:
John Morris Lumley, Ho J. Paik
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Sep 20, 1996
Inventors
John Morris Lumley
Ho J. Paik
Assignee (at issue)
Oxford Instruments (UK) Ltd.
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.