Granted Patent
Utility
US 4,913,468 · App. 07/337,797
Tube union reinforcing clip
Inventor:
Hans R. Rattmann
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Apr 13, 1989
Inventor
Hans R. Rattmann
Assignee (at issue)
Eaton Corporation
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.