Granted Patent
Utility
US 4,880,148 · App. 07/161,185
Fluidization kit for pneumatic discharge outlet
Inventor:
Kenneth D. Schmidt
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Feb 26, 1988
Inventor
Kenneth D. Schmidt
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.