Granted Patent
Utility
US 4,604,918 · App. 06/778,220
Apparatus for applying tension to studs
Inventor:
Derek Leslie Aldred
Patented Case
View Patent ↗
Granted: Aug 12, 1986
Filed: Sep 20, 1985
Inventor
Derek Leslie Aldred
Assignee (at issue)
Haskel, 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.