Granted Patent
Utility
US 5,167,579 · App. 07/745,573
Roof vent of synthetic fiber matting
Inventor:
Martin J. Rotter
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Aug 15, 1991
Inventor
Martin J. Rotter
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.