Granted Patent
Utility
US 6,595,429 · App. 10/115,720
Apparatus and method for providing continuous real-time conditioned air curtain
Inventors:
Dennis L. Carlson, Charles A. Zimmermann
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Apr 3, 2002
Inventors
Dennis L. Carlson
Charles A. Zimmermann
Assignee (at issue)
ASI Technologies, 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.