Granted Patent
Utility
US 5,411,104 · App. 08/197,440
Coalbed methane drilling
Inventor:
Matthew Stanley
Patented Case
View Patent ↗
Granted: May 2, 1995
Filed: Feb 16, 1994
Inventor
Matthew Stanley
Assignee (at issue)
Conoco 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.