Granted Patent
Utility
US 5,881,775 · App. 08/778,111
Heat exchanger tube and method for making
Inventors:
Thomas K. Owen, James R. Watts, Milton F. Custer, Kevin D. McVicker
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Jan 2, 1997
Inventors
Thomas K. Owen
James R. Watts
Milton F. Custer
Kevin D. McVicker
Assignee (at issue)
Hexcel 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.