Granted Patent
Utility
US 4,892,473 · App. 07/288,594
Head for extrusion of elastomeric contour innerliner
Inventors:
Gerardo P. Elia, Gaetan Arbour, Ivan Zlatko Podobnik
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Dec 22, 1988
Inventors
Gerardo P. Elia
Gaetan Arbour
Ivan Zlatko Podobnik
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.