Granted Patent
Utility
US 5,235,715 · App. 07/464,700
Impact asborbing composites and their production
Inventor:
Byron A. Donzis
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Jan 16, 1990
Inventor
Byron A. Donzis
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.