Granted Patent
Utility
US 6,719,334 · App. 10/364,992
Door latch assembly for roll-up doors
Inventor:
David Bryan Curtis
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Feb 12, 2003
Inventor
David Bryan Curtis
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.