Granted Patent
Utility
US 4,355,664 · App. 06/174,304
Apparatus for internal pipe protection
Inventors:
Paul M. Cook, Richard F. Otte, James L. Claypool, Lawrence J. White, Harry C. Broyles, Peter L. Brooks
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jul 31, 1980
Inventors
Paul M. Cook
Richard F. Otte
James L. Claypool
Lawrence J. White
Harry C. Broyles
Peter L. Brooks
Assignee (at issue)
Raychem Limited
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.