Granted Patent
Utility
US 4,737,673 · App. 06/930,421
Bearing assembly for an axially compact miniature motor or ventilator
Inventor:
Gunter Wrobel
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Nov 14, 1986
Inventor
Gunter Wrobel
Assignee (at issue)
Papst Motoren GmbH & Co KG
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.