Granted Patent
Utility
US 5,617,752 · App. 08/518,345
Methods of and apparatus for straightening rods
Inventors:
Bobby D. Hill, Daniel M. Harrell
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Aug 23, 1995
Inventors
Bobby D. Hill
Daniel M. Harrell
Assignee (at issue)
Emhart 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.