Granted Patent
Utility
US 4,903,859 · App. 07/248,097
Container for flowable materials
Inventors:
Norwin C. Derby, Ernest J. Benson
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Sep 23, 1988
Inventors
Norwin C. Derby
Ernest J. Benson
Assignee (at issue)
Better Agricultural Goals 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.