Granted Patent
Utility
US 5,714,525 · App. 08/570,174
Preparation of friction elements and compositions therefor
Inventors:
Ralph T. Brotz, Paschal A. Sciarra, Jr., Phillip A. Waitkus
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Dec 7, 1995
Inventors
Ralph T. Brotz
Paschal A. Sciarra, Jr.
Phillip A. Waitkus
Assignee (at issue)
Plastek Engineering
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.