Granted Patent
Utility
US 4,770,586 · App. 06/439,265
Fastener device
Inventor:
Robert Osterland
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Nov 4, 1982
Inventor
Robert Osterland
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.