Granted Patent
Utility
US 4,639,160 · App. 06/819,929
Windshield wiper ball joint
Inventor:
Edward H. Huesman
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Jan 21, 1986
Inventor
Edward H. Huesman
Assignee (at issue)
General Motors LLC
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.