Granted Patent
Utility
US 5,148,982 · App. 07/698,494
Adjustable slit nozzle
Inventor:
Donald L. Ekhoff
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Apr 26, 1991
Inventor
Donald L. Ekhoff
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.