Granted Patent
Utility
US 4,487,000 · App. 06/368,669
Metal reinforcing strips
Inventor:
Anthony Ball
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Apr 15, 1982
Inventor
Anthony Ball
Assignee (at issue)
Tinsley Wire (Sheffield) 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.