Granted Patent
Utility
US 6,387,175 · App. 09/680,095
Roadway base intermediate, roadway base, and methods of manufacture
Inventors:
John D. Lynn, Leah M. Burge, Douglas J. Koutek, John L. Sullivan
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Oct 5, 2000
Inventors
John D. Lynn
Leah M. Burge
Douglas J. Koutek
John L. Sullivan
Assignees (at issue)
Bethlehem Steel Corporation
Environmental Recycling Technologies, Plc
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.