Granted Patent
Utility
US 4,135,560 · App. 05/752,877
Apparatus for filling bulk material containers
Inventors:
Tan H. Eang, John Othniel McDonald, Kenneth C. Yi
Patented Case
View Patent ↗
Granted: Jan 23, 1979
Filed: Dec 20, 1976
Inventors
Tan H. Eang
John Othniel McDonald
Kenneth C. Yi
Assignee (at issue)
Union Carbide 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.