Granted Patent
Utility
US 4,259,382 · App. 06/043,555
Fiber reinforced composite shaft with metal connector sleeves secured by adhesive
Inventor:
Frank J. Schwan
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: May 29, 1979
Inventor
Frank J. Schwan
Assignee (at issue)
Celanese GmbH
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.