Granted Patent
Utility
US 6,153,283 · App. 09/021,775
Structure having at least one improved surface and a method of making the structure
Inventors:
Richard E. Pierson, Robert M. Evans
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Feb 11, 1998
Inventors
Richard E. Pierson
Robert M. Evans
Assignee (at issue)
Steelwood Extruding Corp.
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.