Granted Patent
Utility
US 4,372,563 · App. 06/315,275
Packing support for mounting a well casing packing
Inventors:
Robert J. Diehl, William L. Godare, Frederic D. Wells, Jr.
Patented Case
View Patent ↗
Granted: Feb 8, 1983
Filed: Oct 26, 1981
Inventors
Robert J. Diehl
William L. Godare
Frederic D. Wells, Jr.
Assignee (at issue)
W-K-M Wellhead Systems, 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.