Granted Patent
Utility
US 5,931,474 · App. 09/028,122
Cavity sealing article and method
Inventors:
Rong J. Chang, Keith Dawes
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Feb 23, 1998
Inventors
Rong J. Chang
Keith Dawes
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.