Granted Patent
Utility
US 5,448,477 · App. 08/020,393
Systems for input and output of data to a well tool
Inventors:
Leroy C. Delatorre, Rene Pingenot
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Feb 22, 1993
Inventors
Leroy C. Delatorre
Rene Pingenot
Assignee (at issue)
Panex 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.