Granted Patent
Utility
US 4,685,533 · App. 06/814,139
Exhaust dissipator device
Inventor:
Edward T. Piesik
Patented Case
View Patent ↗
Granted: Aug 11, 1987
Filed: Dec 27, 1985
Inventor
Edward T. Piesik
Assignee (at issue)
General Dynamics Corp., Pomona Division
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.