Granted Patent
Utility
US 5,778,733 · App. 08/850,645
Spinning nut linear mechanical lock
Inventor:
Calvin R. Stringer
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: May 2, 1997
Inventor
Calvin R. Stringer
Assignee (at issue)
P. L. Porter 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.