Granted Patent
Utility
US 6,427,416 · App. 09/850,311
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Inventor:
Douglas A. Rassel
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: May 7, 2001
Inventor
Douglas A. Rassel
Assignee (at issue)
Aegis Metal Framing LLC
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.