Granted Patent
Utility
US 4,468,039 · App. 06/557,802
Packing ring cartridge with adjusting screws
Inventors:
Tri C. Le, Danny S. Meyer, John B. Williams, Jr.
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Dec 5, 1983
Inventors
Tri C. Le
Danny S. Meyer
John B. Williams, Jr.
Assignee (at issue)
ACF Industries Incorporated
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.