Granted Patent
Utility
US 4,911,245 · App. 07/321,964
Metal seal with soft inlays
Inventors:
Frank C. Adamek, Charles D. Bridges, Anton J. Dach, Jr.
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Mar 10, 1989
Inventors
Frank C. Adamek
Charles D. Bridges
Anton J. Dach, Jr.
Assignee (at issue)
Vetco Gray, LLC
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.