Granted Patent
Utility
US 4,986,149 · App. 07/335,431
System for final balancing of cast metal brake drums
Inventors:
Edwin L. Carmel, Robert A. DeRegnaucourt, Lee Reichel
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Apr 10, 1989
Inventors
Edwin L. Carmel
Robert A. DeRegnaucourt
Lee Reichel
Assignee (at issue)
Dayton Walther 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.