Granted Patent
Utility
US 6,371,896 · App. 09/493,681
Exercise apparatus and process of adjusting same
Inventor:
Heinz Kettler
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Jan 28, 2000
Inventor
Heinz Kettler
Assignee (at issue)
Heinz Kettler 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.