Granted Patent
Utility
US 4,569,671 · App. 06/672,238
Metal chain-belt
Inventor:
Timothy J. Ledvina
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Nov 16, 1984
Inventor
Timothy J. Ledvina
Assignee (at issue)
BorgWarner 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.