Granted Patent
Utility
US 4,805,656 · App. 06/481,596
Porous composite structure
Inventors:
Frederic W. Cole, James B. Padden
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Apr 4, 1983
Inventors
Frederic W. Cole
James B. Padden
Assignee (at issue)
Facet Enterprises, Incorporated
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.