Granted Patent
Utility
US 5,435,869 · App. 08/113,714
Method for manufacturing a composite crank arm
Inventor:
Roland J. Christensen
Patented Case
View Patent ↗
Granted: Jul 25, 1995
Filed: Aug 27, 1993
Inventor
Roland J. Christensen
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.