Granted Patent
Utility
US 5,358,368 · App. 08/119,283
Screw with improved head design
Inventors:
Gary D. Conlan, Dennis Barber
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Sep 9, 1993
Inventors
Gary D. Conlan
Dennis Barber
Assignee (at issue)
Federal Signal Corporation
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.