Granted Patent
Utility
US 5,574,396 · App. 08/322,641
Micro-power vortex isolator circuit
Inventor:
Michael G. Drainville
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Oct 13, 1994
Inventor
Michael G. Drainville
Assignee (at issue)
Fox Boro Company
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.