Granted Patent
Utility
US 6,505,897 · App. 09/806,045
Grouser for a crawler chain
Inventor:
Helmut Kanzler
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Jul 5, 2001
Inventor
Helmut Kanzler
Assignee (at issue)
Kassbohrer Gelandefahrzeug AG
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.