Granted Patent
Utility
US 4,480,841 · App. 06/434,092
Apparatus and method for sealing a tube joint
Inventors:
Glen E. Schukei, Frank J. Formanek, Donald V. Graf
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: Oct 13, 1982
Inventors
Glen E. Schukei
Frank J. Formanek
Donald V. Graf
Assignee (at issue)
Combustion Engineering, 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.