Granted Patent
Utility
US 5,968,641 · App. 09/067,220
Compliant thermoset matrix, fiber reinforced, syntactic foam sandwich panel
Inventor:
Richard A. Lewis
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Apr 28, 1998
Inventor
Richard A. Lewis
Assignee (at issue)
TRW 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.