Granted Patent
Utility
US 5,133,412 · App. 07/714,664
Pull release device with hydraulic lock for electric line setting tool
Inventor:
Martin P. Coronado
Patented Case
View Patent ↗
Granted: Jul 28, 1992
Filed: Jun 14, 1991
Inventor
Martin P. Coronado
Assignee (at issue)
Baker Hughes Holdings LLC
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.