Granted Patent
Utility
US 5,048,672 · App. 07/504,339
Roller drive unit
Inventor:
Jarl Sundseth
Patented Case
View Patent ↗
Granted: Sep 17, 1991
Filed: Apr 3, 1990
Inventor
Jarl Sundseth
Assignee (at issue)
Electro Pneumatic International GmbH
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.