Granted Patent
Utility
US 4,407,779 · App. 06/339,055
Dispersion control device
Inventor:
Joseph Scott Thompson
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Jan 13, 1982
Inventor
Joseph Scott Thompson
Assignee (at issue)
Sterling Drug, 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.