Granted Patent
Utility
US 4,703,780 · App. 06/921,956
Drum filling apparatus and method
Inventors:
Robert H. Reeves, Jr., Donald H. Green, JIMMY BIRDWELL, Henry A. Jorgensen
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Oct 20, 1986
Inventors
Robert H. Reeves, Jr.
Donald H. Green
JIMMY BIRDWELL
Henry A. Jorgensen
Assignee (at issue)
Velasco Scale Company
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.