Granted Patent
Utility
US 4,876,875 · App. 07/130,109
Supported ceramic guide roller
Inventors:
Rudyard J. Bruggeman, Gregory A. Carscallen
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Dec 4, 1987
Inventors
Rudyard J. Bruggeman
Gregory A. Carscallen
Assignee (at issue)
Coors Porcelain Company
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.