Granted Patent
Utility
US 5,000,324 · App. 07/491,216
Ejector nozzle with pressure differential
Inventors:
Jerry W. Brum, James E. Crismon
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Mar 9, 1990
Inventors
Jerry W. Brum
James E. Crismon
Assignee (at issue)
ESM International Inc.
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.