Granted Patent
Utility
US 4,924,583 · App. 07/320,945
Process for producing a disc brake pad
Inventors:
Alan R. Hummel, Ernst R. Welch
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Mar 9, 1989
Inventors
Alan R. Hummel
Ernst R. Welch
Assignee (at issue)
Abex Corporation
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.