Granted Patent
Utility
US 4,814,219 · App. 07/130,148
Fusion of thermoplastic fabrics
Inventors:
Kenneth W. Burgess, Wayne K. Erickson, William R. Bryant
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Dec 8, 1987
Inventors
Kenneth W. Burgess
Wayne K. Erickson
William R. Bryant
Assignee (at issue)
Phillips Petroleum Company
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.