Granted Patent
Utility
US 6,609,516 · App. 10/075,546
Smoke escape mask
Inventors:
David Hollander, Karen Hollander
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Feb 14, 2002
Inventors
David Hollander
Karen Hollander
Assignee (at issue)
Fire Drill, 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.