Granted Patent
Utility
US 4,276,038 · App. 06/060,903
Hydraulic belt tensioner construction
Inventor:
Derald H. Kraft
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Jul 26, 1979
Inventor
Derald H. Kraft
Assignee (at issue)
Dyneer Corporation
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.