Granted Patent
Utility
US 5,900,531 · App. 08/835,340
Portable universal friction testing machine and method
Inventors:
Neel K. Mani, Stanley J. Olesky, David C. Christy
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Apr 7, 1997
Inventors
Neel K. Mani
Stanley J. Olesky
David C. Christy
Assignee (at issue)
Bridgestone Firestone
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.