Granted Patent
Utility
US 6,020,039 · App. 09/063,835
Automobile door impact beam
Inventors:
Richard S. Cline, Jack Shapiro
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Apr 21, 1998
Inventors
Richard S. Cline
Jack Shapiro
Assignee (at issue)
Inland Steel Company
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.