Granted Patent
Utility
US 6,561,120 · App. 09/491,668
Plastic barricade assembly
Inventors:
Geoffrey M. Glass, Wayne J. Brocka, Douglas C. Madsen
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jan 27, 2000
Inventors
Geoffrey M. Glass
Wayne J. Brocka
Douglas C. Madsen
Assignee (at issue)
Plasticide Products 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.