Granted Patent
Utility
US 4,490,316 · App. 06/508,998
Apparatus and method for controlling internal size of an extruded hose
Inventor:
Ronald L. Satzler
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Jun 29, 1983
Inventor
Ronald L. Satzler
Assignee (at issue)
Caterpillar Tractor Co.
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.