Granted Patent
Utility
US 5,259,746 · App. 07/832,134
Extrusion head
Inventor:
Diego Minuado
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Feb 6, 1992
Inventor
Diego Minuado
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.