Granted Patent
Utility
US 3,966,670 · App. 05/535,910
Friction particle for brake lining
Inventors:
Frank S. Grazen, Melvin L. Buike, Frank M. Bryzinsky
Patented Case
View Patent ↗
Granted: Jun 29, 1976
Filed: Dec 23, 1974
Inventors
Frank S. Grazen
Melvin L. Buike
Frank M. Bryzinsky
Assignee (at issue)
Hooker Chemicals & Plastics 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.