Granted Patent
Utility
US 6,601,482 · App. 09/844,996
Recessed head fastener and driver systems
Inventors:
Barry J. Hughes, Michael L. Mowins
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Apr 27, 2001
Inventors
Barry J. Hughes
Michael L. Mowins
Assignee (at issue)
PHILLIPS SCREW COMPANY
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.