Granted Patent
Utility
US 5,311,809 · App. 07/910,464
Method of making tamper-resistant brake actuators
Inventors:
Graydon J. Choinski, Allen L. Gummer, David W. Brooks
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Jul 8, 1992
Inventors
Graydon J. Choinski
Allen L. Gummer
David W. Brooks
Assignee (at issue)
INDIAN HEAD INDUSTRIES, 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.