Granted Patent
Utility
US 6,109,821 · App. 08/911,324
Roadway marker
Inventors:
Anthony A. Montalbano, Sidney A. Heenan, Loren M. Lundtveit
Patented Case
View Patent ↗
Granted: Aug 29, 2000
Filed: Aug 14, 1997
Inventors
Anthony A. Montalbano
Sidney A. Heenan
Loren M. Lundtveit
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.