Granted Patent
Utility
US 5,673,521 · App. 08/609,288
Rolled roof vent and method of making same
Inventors:
Michael S. Coulton, Geoffrey N. Ehrman, William F. Horvath, Kenneth L. Laubsch, Joseph DeMeo
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Mar 1, 1996
Inventors
Michael S. Coulton
Geoffrey N. Ehrman
William F. Horvath
Kenneth L. Laubsch
Joseph DeMeo
Assignee (at issue)
BENJAMIN OBDYKE INCORPORATED
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.