Granted Patent
Utility
US 6,568,394 · App. 09/978,881
Flanged earplug
Inventor:
Robert N. Falco
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Oct 16, 2001
Inventor
Robert N. Falco
Assignee (at issue)
Cabot Safety Intermediate 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.