Granted Patent
Utility
US 4,938,320 · App. 07/295,273
Apparatus and method of utilization thereof of a thermal compensating self-adjusting vehicle wheel drum brake
Inventors:
Robert W. Hyde, Frank W. Brooks, Sr.
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jan 10, 1989
Inventors
Robert W. Hyde
Frank W. Brooks, Sr.
Assignee (at issue)
General Motors LLC
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.