Granted Patent
Utility
US 4,346,205 · App. 06/150,951
Energy absorbing elastomers and composites
Inventor:
Maurice Hiles
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: May 19, 1980
Inventor
Maurice Hiles
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.