Granted Patent
Utility
US 4,877,216 · App. 07/202,292
Automatically-releasable pipe-attachment device
Inventor:
Gerold J. Harbeke
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Jun 6, 1988
Inventor
Gerold J. Harbeke
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.