Granted Patent
Utility
US 4,812,095 · App. 07/169,658
Threaded fastener
Inventors:
Frank Piacenti, Pat Ferrante
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Mar 18, 1988
Inventors
Frank Piacenti
Pat Ferrante
Assignee (at issue)
Emhart Industries, Inc.
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.