Granted Patent
Utility
US 6,743,004 · App. 10/211,509
Vacuum pump
Inventor:
Dieter Otto
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Aug 2, 2002
Inventor
Dieter Otto
Assignee (at issue)
LuK Automobiltechnik 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.