Granted Patent
Utility
US 4,470,718 · App. 06/371,949
Joining device
Inventor:
Norbert L. Cwik
Patented Case
View Patent ↗
Granted: Sep 11, 1984
Filed: Apr 26, 1982
Inventor
Norbert L. Cwik
Assignee (at issue)
Quake Industries, Inc.
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.