Granted Patent
Utility
US 6,755,748 · App. 10/177,613
Screw head formation
Inventor:
Lawrence Brooks
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Jun 20, 2002
Inventor
Lawrence Brooks
Assignee (at issue)
Uni-Screw Limited
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.