Granted Patent
Utility
US 6,047,576 · App. 08/963,604
Security system for roll-down loading doors
Inventors:
William P. Lanigan, Peter W. Mirabella
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Oct 31, 1997
Inventors
William P. Lanigan
Peter W. Mirabella
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.