Granted Patent
Utility
US 5,120,206 · App. 07/682,036
Gear metering pump for compounded elastomeric material
Inventors:
Arthur W. Greenstreet, Joseph C. Norka
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Apr 8, 1991
Inventors
Arthur W. Greenstreet
Joseph C. Norka
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.