Granted Patent
Utility
US 4,501,219 · App. 06/481,809
Tensioner apparatus with emergency limit means
Inventor:
Howard J. Bates
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Apr 4, 1983
Inventor
Howard J. Bates
Assignee (at issue)
NL 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.