Granted Patent
Utility
US 4,422,231 · App. 06/349,806
Method of forming a block for a metal belt
Inventor:
Kenneth A. Braybrook
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Feb 18, 1982
Inventor
Kenneth A. Braybrook
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.