Granted Patent
Utility
US 4,709,933 · App. 07/039,060
Temperature transient resistant seal
Inventors:
Frank C. Adamek, Charles D. Bridges
Patented Case
View Patent ↗
Granted: Dec 1, 1987
Filed: Apr 16, 1987
Inventors
Frank C. Adamek
Charles D. Bridges
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.