Granted Patent
Utility
US 5,048,721 · App. 07/437,735
Method for enhancing the mixture of gases within a cylinder
Inventors:
Timothy E. Gittens, Juergen D. Philipp
Patented Case
View Patent ↗
Granted: Sep 17, 1991
Filed: Nov 17, 1989
Inventors
Timothy E. Gittens
Juergen D. Philipp
Assignee (at issue)
Union Carbide Industrial Gases Technology 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.