Granted Patent
Utility
US 4,925,721 · App. 06/644,755
Honeycomb sandwich structure having dissimilar metal face sheets
Inventors:
Jan Harper-Tervet, Rod F. Simenz, James C. George
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Aug 27, 1984
Inventors
Jan Harper-Tervet
Rod F. Simenz
James C. George
Assignee (at issue)
Lockheed 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.