Granted Patent
Utility
US 5,854,552 · App. 08/770,562
Moving magnet indicating instruments with a plurality of damping fluid migration barriers
Inventor:
Vincent H. Rose
Patented Case
View Patent ↗
Granted: Dec 29, 1998
Filed: Dec 20, 1996
Inventor
Vincent H. Rose
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.