Granted Patent
Utility
US 4,512,754 · App. 06/485,781
Metal chain-belt
Inventors:
Edward H. Cole, Jr., Timothy J. Ledvina
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Apr 18, 1983
Inventors
Edward H. Cole, Jr.
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.