Granted Patent
Utility
US 5,697,651 · App. 08/398,211
Flexible duct joint having a low leakage, pressure-balanced bellows seal
Inventor:
Leslie Fernandes
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Mar 2, 1995
Inventor
Leslie Fernandes
Assignee (at issue)
Senior Flexonics, 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.