Granted Patent
Utility
US 4,754,813 · App. 06/941,260
Tree capless cone seal manifold
Inventors:
Charles E. Jennings, Jon E. Hed, Jeffrey Douglas Otten, Lee A. Gillette, Bruno Schauerte, Christian G. Marius
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Mar 27, 1987
Inventors
Charles E. Jennings
Jon E. Hed
Jeffrey Douglas Otten
Lee A. Gillette
Bruno Schauerte
Christian G. Marius
Assignee (at issue)
Vetco Gray, 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.