Granted Patent
Utility
US 3,956,548 · App. 05/553,450
Duo material carbon composite brake disk
Inventors:
James J. Kovac, Mial T. Hillhouse, David M. Seikel, Richard L. Ramsey
Patented Case
View Patent ↗
Granted: May 11, 1976
Filed: Feb 27, 1975
Inventors
James J. Kovac
Mial T. Hillhouse
David M. Seikel
Richard L. Ramsey
Assignee (at issue)
Goodyear Aerospace 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.