Granted Patent
Utility
US 4,296,806 · App. 06/082,406
High temperature well packer
Inventors:
Donald F. Taylor, James H. Bostock
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Oct 5, 1979
Inventors
Donald F. Taylor
James H. Bostock
Assignee (at issue)
Otis Engineering Corporation
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.