Granted Patent
Utility
US 4,540,447 · App. 06/502,740
Method of making a multigrip fastener and fastener made thereby
Inventor:
Larry D. Mercer
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Jun 9, 1983
Inventor
Larry D. Mercer
Assignee (at issue)
Huck Manufacturing Co.
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.